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n. - The membrane that forms the wall of the blastocyst in early development.

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Usage examples (37)
  • After implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta
  • A typical day-5 human embryo consists of 200-250 cells, most of which comprise the trophoblast, which is the outermost layer of the blastocyst.
  • Perhaps they're hoping the the terms "trophoblast", "blastocoel", and "blastocyst" will disguise the fact that we're talking about a human being?
  • The derivation of HESC cultures requires the removal of the trophoblast.
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