The implantation of the blastocyst into the female uterus or of the human embryo is adherence to the wall of the uterus of the so-called blastocyst - stage of human embryogenesis-. The implatación begins at the end of the first week - seventh or eighth day - after the fertilization of the egg by the sperm and extends until the end of the second week - 14 days after fertilization
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