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| About Carnegie Stage 15 Most embryos at stage 15 are approximately 33 postovulatory days old and measure 7-9 mm in length. Distinguishing criteria for this stage include the appearance of nasal pits and hand plates. The lens vesicles are closed. |
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| Rotation | Neural Tube | Neural Tube | Heart | Stereo | Time Lapse | QuickTime | YouTube |
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| © 2009 Bradley R. Smith | ||