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primitive pit |
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primitive pit,
a minute indentation at the anterior end of the primitive groove in the early developing embryo. It lies posterior to the primitive node and probably functions as an opening into the notochordal canal in humans and higher animals and into the neurenteric canal in lower animals. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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