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Trophoblast


Trophoblast
[Gr. trophos - one who feeds; Gr. blastos - germ, bud, shoot]. The outer layer of the conceptus which makes direct contact with endometrium.
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tissue forms a trophic interface between the embryo and mother during cleavage, and subsequently forms the embryonic portion of the placenta upon implantation into the endometrial epithelium of the uterine wall. A portion of cytotrophoblast cells ...
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trophoblast — a hollow sphere of cells that will go on to implant in the uterus and develop into the extraembryonic membranes
placenta
umbilical cord
amnion ...
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trophoblast: a layer of cells that forms after fertilization; projections from the trophoblast form vessels, which merge with maternal blood vessels to form the placenta.
tropism: the bending or turning response of a plant caused by external stimuli.
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trophoblast The outer layer of cells of a blastocyst that adhere to the endometrium during implantation.
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trophoblast
[Gk. trophos, feeder + blastos, sprout]
The outer epithelium of the blastocyst, which forms the fetal part of the placenta.
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trophoblast Outer ectodermal nutritive layer of blastodermic vesicle; in mammals it is part of the chorion and attaches to the uterine wall.
trophont Stage in the life cycle of gregarines.
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trophoblast - in a mammalian blastocyst, the outer superficial layer of cells surrounding the inner cell mass.
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Hydatidiform mole results from an exclusively paternal fertilization event and is characterized by unusual trophoblastic growth without an apparent fetus. Incidence is approximately 1/1000 pregnancies.
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