Article
Chorionic gonadotrophin and embryo-maternal recognition during the peri-implantation period in primates
1 Jul 1991
Abstract excerpt
Genes for chorionic gonadotrophin (CG) are transcribed by the 16-cell embryo stage in humans, but there is no clear evidence of CG secretion as a bioactive dimer before attachment and trophoblast outgrowth stages of implantation. The studies summarized question the timing of CG expression and secretion, the possible roles of CG for intraembryonic differentiation and at the implantation site, and the recognition...
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