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germ-layer theory |
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germ-layer theory [′jərm ‚lā·ər ‚thē·ə·rē] (embryology) The theory that three primary germ layers, ectoderm, mesoderm, and endoderm, are established in the early embryo and all organs and structures are derived from a specific germ layer. 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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