| 释义 |
DictionarySeeshieldembryonic shield
em·bry·on·ic shielda thickened area of the embryonic blastoderm from which the embryo develops.em·bry·on·ic shield (em'brē-on'ik shēld) A thickened area of the embryonic blastoderm from which the embryo develops. embryonic shieldThe two-layered blastoderm or blastodisk from which a mammalian embryo develops.See also: shield |