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<body><h1>Akai Deep Impact Sb1 Manual</h1><table class="table" border="1" style="width: 60%;"><tbody><tr><td>File Name:</td><td>Akai Deep Impact Sb1 Manual.pdf</td></tr><tr><td>Size:</td><td>1994 KB</td></tr><tr><td>Type:</td><td>PDF, ePub, eBook, fb2, mobi, txt, doc, rtf, djvu</td></tr><tr><td>Category:</td><td>Book</td></tr><tr><td>Uploaded</td><td>28 May 2020, 13:34 PM</td></tr><tr><td>Interface</td><td>English</td></tr><tr><td>Rating</td><td>4.6/5 from 669 votes</td></tr><tr><td>Status</td><td>AVAILABLE</td></tr><tr><td>Last checked</td><td>13 Minutes ago!</td></tr></tbody></table><p><h2>Akai Deep Impact Sb1 Manual</h2></p><p>Even when the appliance Pull out the adaptor when not using the appliance for long These limits are designed to provide However, there is no guarantee that interference will not If this equipment does cause harmful interference to Apart from voiding the warranty, unauthorized engineers might touch live internal parts and receive a serious electrical shock. INPUT LEVEL Hiermit wird der Eingangssignalpegel eingestellt. INPUT (Input impedance: 500k ohms or more) SYMBOLS FOR PRIMARY DESTINATION Replace them only with the parts number specified. Unit destinations are indicated with letters as shown below. 2. In addition to safety, other parts and assemblies are Symbols Principal Destinations specified for conformance with such regulations as those. Caution: When the DATA knob is turned to change the PARAMETER on the SB1, the new data will automatically be memorized in the F-ROM, canceling the previous data value. Otherwise, the non-delivery of the part or the delivery of a wrong part may result. 2. Post your question here in this forum. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share. Note that email addresses and full names are not considered private information. Please mention this; Therefore, avoid filling in personal details. Please enter your email address. If so, the DEEP IMPACT bass synth is for you. Featuring a four-oscillator synthesiser optimised for fat bass sounds, the DEEP IMPACT pedal allows you to use your existing bass guitar to generate woofer wobbling synth bass lines. Using innovative pitch detection circuitry, the DEEP IMPACT pedal can track your playing quickly and responsively to provide fat and fruity bass synth tones. You can use the synth sound on its own or you can mix in a proportion of your bass guitar's sound to the output.<a href=""></a></p><ul><li><strong>akai deep impact sb1 manual, akai deep impact sb1 manual user, akai deep impact sb1 manual transmission, akai deep impact sb1 manual parts, akai deep impact sb1 manual instruction.</strong></li></ul> <p> Synth presets are selected using the footswitches or the effect can be completely bypassed using Akai Professional's 'true bypass' feature which allows the straight sound to pass through with no unwanted colouration from the pedal's circuitry. Each of these presets are fully customisable with control over attack, decay, envelope depth, dynamics sensitivity, filter cutoff, filter resonance, synthesizer and direct balance, program level, synth trigger level and noise gate. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Sign Up Now! Clean signal gets through when bypassed, but when an effect is engaged either no signal or a very low distorted signal comes through. The input level lights on the top rght of the pedal remain lit in any position. I understand it's unlikely that I'll be able to get it fixed, but I want to try, (because I love the pedal and spent a small fortune buying it). Does anyone have a copy of the service manual. Cheers, Dan.PM me your email address if you want PDF copy.Click to expand. Gold Supporters see zero ads. Upgrade Now Thanks for your support! By continuing to use this site, you are consenting to our use of cookies. Reference Manual, presented here, contains 7 pages and can be viewed online or downloaded to your device in PDF format without registration or providing of any personal data. We remind you, that it is highly advisable to carefully read the instructions before starting of using Akai Deep Impact SB1, in case of unforeseen situations - you need immediately contact the nearest service center.Please ensure that your AC Adaptor supplied meets the power requirements in your area.Each parameter is correlated with other parameters. If altering one parameter doesn’t change the sound much, try altering the other parameters as well.PARAMETER selector Pour selectionner les parametres que vous voulez editer. INPUT LEVEL control Ceci regle le niveau du signal d’entree.<a href=""></a></p><p>The right choice of power source directly affects on the life-cycle of the equipment, and the amount of energy consumed will help optimize costs when using it. In such cases, we recommend our users to see related documentation or ask a question in the form below. By using out site you agree to our use of cookies. Select Currency The Deep Impact continues to be very sought-after and with good reason: your bottom does look very big with this. This pedal really nails synth bass sounds like no other. For sale serviced, tested and working perfectly. Click on the photos to zoom in and see more shots. Comes with the original packaging and Japanese instructions (with great cartoon illustrations of the dos and don’ts of using your pedal). Just Listed These are wonderful desks - we had one in our studio. So all of a sudden we have 50,000 followers on Instagram. A chance to look back at a few highlights, and to share a few. PUBLISHED: 12th Aug 2020 Inevitably some old faithfuls are being replaced - this is the. PUBLISHED: 12th Mar 2020 Calculated automatically at checkout. Read this week's Gear Update. Think I still have the box and original PSU. It does have a minor issue with the LED, I think it needs resoldered (you can tap the led and it lights up - so looks like a contact issue). I can send a video to show what I mean (Not sure why i've given info here, everyone knows what it does:D)Not a scratch. Bloody GSDs!Interested in trying one of these out Interested in trying one of these out Times have surely changed. Hit me up with an offer.Yeah happy enough to ship.Paste as plain text instead Display as a link instead Clear editor Upload or insert images from URL.Used acoustically it is loud enough for solo practice. The fourth slider controls synth volume, and the two push-buttons correspond to S1 and S2 in the Roland system. I used to have a guitar synth, and this guitar tracks far better than any add-on GK pickup I have used.</p><p> If you don't want to use the synth function you can safely forget about it though! This does not make the guitar 'harder' to play - on the contrary, you can dig in more (especially with a plectrum) without causing buzzing and tuning issues. They could do with changing, but I am including a fresh set plus a set of Savarez strings as spares. The dots in the close-up pic of the bridge are tiny raindrops btw! However, I may be able to deliver to your home or workplace in person for a contribution towards my diesel costs - PM me with your location if you want to discuss this option. Not much difference to my ears, just slightly different labelling on yhe enclosure. ?65 for the v1, ?75 for the V2. THE bass player’s Chorus pedal. In mint condition, with original box, dust bag, and manual etc. - ?170 SOLDNever seen another one for sale. The ULTIMATE Bass wah Pedal. Pressure activated or footswitchable to allow half open wah tones, three switchable frequency bands, and four switchable filter bandwidths give you 12 different wah settings, nailing anything from rock to funk. Mint condition - ?200 SOLDExpression pedal input, tap tempo, loads of different wave shapes, plus your standard controls such frequency, depth, mix etc. Toggle switch between 4, 6 and 8 stages of analog phasery goodness. Mint condition save for the velcro on the bottom - ?170All those early RATM distortion sounds are in there. In excellent condition, but missing the battery door - ?85High quality relay switching. In excellent condition, I got this as part of a job lot of GigRig stuff and have actually never used it - ?85. Loved the first one I had and regretted selling it, so I picked this one up. Haven't used it since I bought it on a whim and it's just sat here in its box. ?55Sounds great, get your Phil Lynott on. Recently serviced - ?60Two footswitches, one to activate the loop, the other to switch between blended and 100% wet.</p><p> Phase invert switch for pedals that invert the phase (some envelope filters do this making them hard to use with a clean blend). Good condition with manual and original box - ?100Like it's little brother, the Stereo X-Blender allows you to blend your clean signal with your effects. But where it differs is that you have 3 FX Loops. All 3 loops have stereo returns, and run in parallel to each other. So you can run three pedals or groups of pedals on top of each other instead of into each other. Some really cool sounds to be had here. It's main outputs are also stereo. A real swiss army knife pedal with lots of potential for crazy sounds, signal routing, and general blending capabilities. I bought this brand new not long ago, and it saw a couple of gigs before my needs changed, and it went back in the box. Exactly the same pedal, just a different enclosure. From what I have read, there were only 50 of these ever produced - ?340Postage also possible, add ?5 or ?10 for the larger pedals.It's an amazing pedal and extremely versatile. I've just changed my playing approach very soon after buying it so it hasn't even been taken out for a gig, so it definitely deserves to go to someone who will utilise it's full potential.This pedal will do someone a world of good when it comes to making synth sounds without having to spend ?1000s on synth hardware. It has been tested and is in full working order. The item is in good cosmetic condition and just has a few scuffs on the sides. It comes with the power supply unit, manual and the original packaging. To prevent fire or shock hazard, do not expose this appliance to rain or moisture. 1-En The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure; that may be of sufficient magni- tude to constitute a risk of electric shock to persons.</p><p>To change the fuse in this type of plug proceed as follows: 1) Remove the fuse cover and old fuse. 2) Fit a new fuse which should be a BS1362 5 Amp A.S.T.A. or BSI approved type. 3) Refit the fuse cover. If the AC mains plug fitted to the lead supplied with this equipment is not suitable for your type of AC outlet sockets, it should be changed to an AC mains lead, complete with moulded plug of the appropriate type. If this is not possible, the plug should be cut off and a correct one fitted to suit the AC outlet. This should be fused at 5 Amps. If a plug without a fuse is used, the fuse at the distribution board should not be greater than 5 Amp.The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED. Ensure that all the terminals are securely tightened and no loose strands of wire exist. Before replacing the plug cover, make certain the cord grip is clamped over the outer sheath of the lead and not simply over the wires. 6F-En English CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY THE MANU- FACTURER FOR COMPLIANCE COULD VOID THE USER’S AUTHORITY TO OPERATE THE EQUIPMENT. 32-En This appliance is not equipped with a main power switch. Even when the appliance is turned off, the power supply to the appliance is not completely turned off when the power cord is plugged in. Pull out the adaptor when not using the appliance for long periods. 4-En This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. 27-En FCC WARNING This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.</p><p> This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interfer- ence to radio communications. However, there is no guarantee that interference will not occur in a particular installation.Esita kysymyksesi taalla. Anna selkea ja kattava kuvaus asiasta ja kysymyksestasi. Mita yksityiskohtaisemmin kuvaat asiaasi ja kysymystasi, sita helpompi muiden AKAI Deep Impact SB1 omistajien on vastata kysymykseesi oikein. Kysy kysymys Tietoja AKAI Deep Impact SB1 Tama opas kuuluu luokkaan Hifi-jarjestelmat, ja sen on arvioinut 1 ihmista keskimaarin arvosanalla 9.5. Tama opas on saatavana seuraavilla kielilla: Englanti, Saksa, Ranska. Onko sinulla kysyttavaa tuotteesta AKAI Deep Impact SB1 tai tarvitsetko apua.Useimmissa tapauksissa matka kahden laitteen valilla ei voi olla enempaa kuin kymmenen metria.Kun aanenvoimakkuus ylittaa 120 desibelin, voi jopa suoraa vahinkoa tapahtua. Vahinko kuulolle riippuu siita, kuinka useasti ja kauan kuuntelet.HDMI-kaapelia kaytetaan aani- ja videosignaalien siirtamiseen laitteiden valilla. Vaikeasti tavoitettavista paikoista polyn saa parhaiten pois paineilmalla. Tama mahdollistaa 5.1-tilaaanen luomisen vain yhdella kaiuttimella. Meidan tietokantamme sisaltaa yli 1 miljoonaa PDF manuaalia yli 10,000 merkilta. Lisaamme paivittain viimeisimpia manuaaleja, jotta loydat aina tuotteen jota etsit. Tama on todella yksinkertaista: kirjoitat vaan tuotteen merkin ja tyypin hakupalkkiin, ja voit valittomasti katsoa valitsemaasi manuaalia ilmaisesti onlinessa. Kayttooh. je Jos jatkat taman sivuston kayttoa, oletamme etta hyvaksyt ne. Lue lisaa Ok. Thee most legendary synth pedal ever created. These are one of thee funnest pedals you will ever experience. Super flexible, great programming and incredible tracking equals superb tone. This one is very close to new and includes the original box, papers and even the bag the pedal came in.</p><p> Everything is very well kept. Just use your typical Boss type tip negative DC power supply and you're in a whole new world. JEXT TELEZNOTICE: WE ARE ON VACATION FROM DECEMBER 19'th TO JANUARY 1'st. NO PEDALS WILL SHIP UNTIL AFTER JANUARY 1'st, 2016.We pay exceedingly well because we have a large client base who want the best in serviced and excellent condition vintage pedals. Our in-house staff are experts of vintage pedals, repairs, amps and instruments. Whether your vintage pedals need repair or you are selling off a collection, contact us. We will offer you the most money with the least headaches. You deserve the benefits of intelligent collecting. Contact Bob at 586-894-2907, Texting is a good way to get through quickly. You are the light of the world. Learn more See our disclaimer AC Adapter for AKAI Sb1 Deep Impact Bass Synth Effect Pedal Power Supply Cord condition: New Model: AC Adapter for AKAI Sb1 Deep Impact Bass Synth To Fit: AKAI Sb1 Deep Impact Bass Synth Effect Pedal MPN: Does Not Apply Brand: GENERIC Effects Type: Power Supplies AC Adapter for AKAI Sb1 Deep Impact Bass Synth Effect Pedal Power Supply Cord Specifications Brand V.I.P. Customer Reviews Write a review Be the first to review this item. Ask a question Ask a question If you would like to share feedback with us about pricing, delivery or other customer service issues, please contact customer service directly. So if you find a current lower price from an online retailer on an identical, in-stock product, tell us and we'll match it. See more details at Online Price Match. Related Pages: Automotive Electrical Car Audio Accessories RV Extension Cords RV Replacement Parts RV Electrical All Auto Accessories RV Exterior Accessories RV Adapters and Surge Protectors All Rights Reserved. To ensure we are able to help you as best we can, please include your reference number: Feedback Thank you for signing up. You will receive an email shortly at: Here at Walmart.</p><p>com, we are committed to protecting your privacy. Your email address will never be sold or distributed to a third party for any reason. If you need immediate assistance, please contact Customer Care. Thank you Your feedback helps us make Walmart shopping better for millions of customers. OK Thank you! Your feedback helps us make Walmart shopping better for millions of customers. Sorry. We’re having technical issues, but we’ll be back in a flash. Done. Something went wrong. Sell on eBay Sell Effects Pedals User Agreement, Privacy, Cookies and AdChoice Norton Secured - powered by Verisign. Repaired power socket. We are based in the UK and have many years’ experience sourcing, servicing and shipping delicate vintage gear worldwide. You can rely on us to pack your item with care, and deliver swiftly by international courier with full tracking and insurance. We offer a professional satisfaction-guaranteed service: customer care and attention to detail are paramount. Please contact us by phone or email if you have any questions or feedback. Tony We're on UK time - so will call you back if we're not able to answer the phone if you call and leave a message. Alternatively, email us your number and a good time to call and we'll call you.We ship all over the world mostly via UPS so for other countries please get in touch. You'll soon be able to get estimated rates off our website but the easiest thing to do is contact us and we'll give your our best current rate.Most of the vintage gear we sell has been freshly-serviced for optimum performance. Everything is checked, tested and then tested again just before we ship. Full info coming here soon but it's all in the FAQ section of our website. We also use dubious tracking scripts. Find out more in the Privacy Policy. We use cookies and wanna let you know.Flanger includes Rate, Depth, Manual and Res knobs in heavy-duty polished stainless-steel housing. True-bypass switching and four adjustable knobs provide precision control.</p><p> The Rate knob sets how often the oscillation effect waveform repeats as well as the resulting pitch and depth of the signal. Depth sets the intensity of the flange effect, ranging from a mellow stir to an intense swirling maelstrom. Manual and Res work in combination to both delay and increase the intensity of the overall effect. MANUAL: Turn this knob to adjust the mid frequency of the filter sweep - the flanging sound. To hear how this effect works, set the RATE and DEPTH knobs at low settings and the RES knob to a high setting, then adjust the MANUAL knob. (NOTE: if the DEPTH setting is high, this knob won't seem to be influencing much.) RES: Turn this knob to adjust the flanger's resonance - how much of the affected signal is fed back into the input. Turning this knob to higher settings can cause the flanger to start generating its own tone at loud volumes, so be mindful of your amp volume when adjusting this knob. BYPASS SWITCH: Step on this switch to turn the effect on or off. This pedal features a true bypass switch, meaning your signal won't be coloured by the pedal's circuitry when the effect is off. The Frogg is really quite the Prince.Touted by its manufacturer as the first digital effect when it was released, the Frogg Compu-Sound was, in fact, an all-analog filter with envelope control that used IC chips to govern the various patterns and sequences. Only about 100 were made. Perhaps it falls short of being a true synthesizer, but the quality of the effects is superb and it’s a delight to play. It was used during the recording of Saturday Night Fever. Those distinctive, funky envelope filter and wah sounds feature heavily in the Frogg’s 99 programs. Designed by Doug Talley (who also worked for Foxx), the Compu-Sound delivers an array of effects, including various automatic and manual wah, envelope filter, and notch flanger patterns. It came with a treadle. It was used during the recording of Saturday Night Fever.</p><p> We’ve been working on fixing three machines for over a year now. There are no available schematics and, to protect their design, Frogg erased the identity markings from the IC chips. If anyone reading this has access to schematics, please get in touch, as it pains me to think of such rare and superb-sounding devices being consigned to the scrap heap. And while they are hard to find, their current prices are more in line with a proletarian budget than other vintage big-beast guitar-synth boxes. It’s included here because it looks amazing and sounds completely bonkers. But it’s also very large, heavy, and almost impossible to find. That said, when one does turn up it’s typically cheaper than the other devices we’ve covered so far.Comprising a 4-head tape delay with a shimmer setting, fuzz, vibrato, and a phaser with identity issues (it thinks it’s a flanger), plus a heavy-duty treadle for manual control, this unit emits sounds like you’re playing guitar inside the rusting ice-covered hulk of an abandoned nuclear sub—in a vortex. Later models abandoned the tape delay for an oh-so-modern BBD delay system.Famous users were probably banished to Siberian salt mines. The regeneration and delay controls are familiar to vintage analog delay users, but the A and B harmony settings add a new dimension. Photo courtesy of Rafmax. As I mentioned at the start, there is more to the guitar-synth-pedal world than these rare big beasts. There are, of course, the rack or pedalboard friendly classics that have enjoyed far greater appeal and use. These range from the David Cockerell-designed Electro-Harmonix Microsynth to the Korg X-911 to the Roland SPV-355 to the Akai Deep Impact SB-1 bass pedal. To join in the hunt for these now, grab your pith helmet and take to the internet. We will get back to you in 24 hours. Thank you. Close Feedback Found a bug. Suggestions Copyright Need help.</p><p> Business Development General inquiry Email address (optional): A message is required Message (required). Because many developmental mechanisms are highly conserved, it is possible to extrapolate from observations made in invertebrate and vertebrate model organisms to humans. This review will highlight the contributions made through studying heart development in avian embryos, particularly the chicken. The major advantage of chick embryos is their accessibility for surgical manipulation and functional interference approaches, both gain- and loss-of-function. In addition to experiments performed in ovo, the dissection of tissues for ex vivo culture, genomic, or biochemical approaches is straightforward. Furthermore, embryos can be cultured for time-lapse imaging, which enables tracking of fluorescently labeled cells and detailed analysis of tissue morphogenesis. Owing to these features, investigations in chick embryos have led to important discoveries, often complementing genetic studies in mice and zebrafish. As well as including some historical aspects, we cover here some of the crucial advances made in understanding early heart development using the chicken model. We looked at four groups with a total of 36 embryos. There was a control group, a normal saline group, a normal-dose group and a high-dose group with ten, ten, eight and eight eggs with embryo respectively. Two embryos in the control group, studied with light microscopy at 48 h, were consistent with 28-29 hours' incubation in the Hamburger-Hamilton System. They had open neural tubes. The other embryos in this group were considered normal. One embryo in the normal saline group was on the occlusion stage at 48 h. One embryo showed an open neural tube. They were compatible with 28-29 hours' incubation in the Hamburger-Hamilton system. The remaining eight embryos showed normal development. In the normal dose group, one embryo showed underdevelopment of the embryonic disc and the embryo was dead.</p><p> In four embryos, the neural tubes were open. One cranial malformation was found that was complicated with anencephaly in one embryo. In two embryos the neural tubes were closed, as they showed normal development, and they reached their expected stages according to the Hamburger-Hamilton classification. There was no malformation or growth retardation. Four experimental embryos were anencephalic in the high dose group, and three embryos had open neural tubes. One embryo exhibited both anencephaly and a neural tube closure defect. None of the embryos in this group showed normal development. Even the usual therapeutic doses of flurbiprofen increased the risk of neural tube defect. Flurbiprofen was found to significantly increase the risk of anencephaly. The provision of improved technical materials and studies with larger sample sizes will reveal the stage of morphological disruption during the development of embryos. Since the chicken embryo becomes immunocompetent prior to hatch, we here characterized the transcriptional response of selected innate immune genes to Newcastle disease virus (NDV) infection in chicken embryos at days 10, 14, and 18 of embryonic development. The results suggest that the innate immune response 72 h after challenge of 18-day chicken embryo is both consistent and robust. The expression of CCL5, Mx1, and TLR3 in lung tissues of NDV challenged chicken embryos from the outbred Kuroiler and Tanzanian local ecotype lines showed that their expression was several orders of magnitude higher in the Kuroiler than in the local ecotypes. Next, the expression patterns of three additional innate-immunity related genes, IL-8, IRF-1, and STAT1, were examined in the highly congenic Fayoumi (M5.1 and M15.2) and Leghorn (Ghs6 and Ghs13) sublines that differ only at the microchromosome bearing the major histocompatibility locus.</p><p> The results show that the Ghs13 Leghorn subline had a consistently higher expression of all genes except IL-8 and expression seemed to be subline-dependent rather than breed-dependent, suggesting that the innate immune response of chicken embryos to NDV infection may be genetically controlled by the MHC-locus. Taken together, the results suggest that the chicken embryo may represent a promising model to studying the patterns and sources of variation of the avian innate immune response to infection with NDV and related pathogens.Since the chicken embryo becomes immunocompetent prior to hatch, we here characterized the transcriptional response of selected innate immune genes to Newcastle disease virus (NDV infection in chicken embryos at days 10, 14, and 18 of embryonic development. Next, the expression patterns of three additional innate-immunity related genes, IL-8, IRF-1, and STAT1, were examined in the highly congenic Fayoumi (M5.1 and M15.2 and Leghorn (Ghs6 and Ghs13 sublines that differ only at the microchromosome bearing the major histocompatibility locus. Taken together, the results suggest that the chicken embryo may represent a promising model to studying the patterns and sources of variation of the avian innate immune response to infection with NDV and related pathogens. Glucose entry rate, Cori cycling, and GNG were higher (P embryos, presumably to support higher glycogen deposition in liver and muscle. Whereas de novo synthesis of alanine, aspartate, and glutamate via glycolysis and the Krebs cycle was higher (P embryos, synthesis of these NEAA from glycerol was higher (P embryos. These patterns of glucose and glycerol utilization suggest a metabolic shift to conserve glucose for glycogen synthesis and an increased utilization of yolk glycerol (from triacylglyceride) after e14. In summary, the in ovo continuous tracer infusion approach allowed for a measurement of chicken embryo whole body and liver metabolism over a shorter window of development.</p><p> This study provided quantitative estimates of the developmental shifts in substrate utilization, GNG, and NEAA synthesis by chicken embryos, as well as qualitative estimates of the activities of enzymes central to the Krebs cycle In the present study, the timing and location of expression of mRNA for goosecoid (gsc), a gene classically expressed in the nodal region of developing embryos, was examined and compared in Recent experiments showed that in ovo feeding reduces. The embryos were evaluated on day 20 of incubation. The results indicate that the application of ATP to chicken embryos increases. The production of estrogen occurs via a well-characterised steroidogenic pathway, which is a multi-step process involving several enzymes, including cytochrome P450 aromatase. In chicken embryos, the aromatase gene (CYP19A1 is expressed female-specifically from the time of gonadal sex differentiation. To further explore the role of aromatase in sex determination, we ectopically delivered this enzyme using the retroviral vector RCASBP in ovo. Aromatase overexpression in male chicken embryos induced gonadal sex-reversal characterised by an enlargement of the left gonad and development of ovarian structures such as a thickened outer cortex and medulla with lacunae. In addition, the expression of key male gonad developmental genes (DMRT1, SOX9 and Anti-MA?llerian hormone (AMH was suppressed, and the distribution of germ cells in sex-reversed males followed the female pattern. The detection of SCP3 protein in late stage sex-reversed male embryonic gonads indicated that these genetically male germ cells had entered meiosis, a process that normally only occurs in female embryonic germ cells. This work shows for the first time that the addition of aromatase into a developing male embryo is sufficient to direct ovarian development, suggesting that male gonads have the complete capacity to develop as ovaries if provided with aromatase.</p>
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