title: Human chorionic gonadotropin secreted by preimplantation embryos cultured in vitro.
abstract: Human oocytes were collected by laparoscopy and fertilized and cultured in vitro. Human chorionic gonadotropin was detected in the medium surrounding two embryos cultured for more than 7 days after fertilization.
mesh_terms: D001755:Blastocyst / Q000502:physiology*; D006063:Chorionic Gonadotropin / Q000378:metabolism*; D047108:Embryonic Development; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy; D014327:Trophoblasts / Q000502:physiology
chemical_list: D006063:Chorionic Gonadotropin