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dorsal lip |
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dorsal lip, the marginal fold of the blastopore during gastrulation in the early stages of embryonic development of many animals. It marks the dorsal limit of the developing embryo, constitutes the primary organizer, gives rise to neural tissue, and corresponds to the primitive node in humans and higher animals. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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