trophoblast

Noun
  1. The membrane that forms the wall of the blastocyst in early development;
    Aids implantation in the uterine wall (synset 101464850)
    "after implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta"
    is a type of: membrane, tissue layer - a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants
    is a part of: blastosphere, blastula - early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs

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