Blastocyst
| Medical Definition: |
Early preimplantation mammalian EMBRYO in the post-MORULA stage. Its structure consists of a TROPHOBLASTS-enclosed fluid-filled cavity with an inner cell mass. After EMBRYO IMPLANTATION, the inner cell mass of the blastocyst becomes the embryonic disc of the developing embryo. |
| Guide Notes: |
Mammalian only; non-mammalian, use BLASTULA; /transpl: coord BLASTOCYST (NIM with no qualif) + EMBRYO TRANSFER (IM); do not confuse with BLASTOCYTES see BLASTOMERES |
Blastocyst Categories.
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Blastoderm - A single layer of cells produced by cleavage of the fertilized ovum and forming the outer cells of the blastula. |
Blastocyst Medical Definitions and Terms
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