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. 1984 Feb 24;223(4638):816-8.
doi: 10.1126/science.6546453.

Human chorionic gonadotropin secreted by preimplantation embryos cultured in vitro

S B Fishel, R G Edwards, C J Evans

Human chorionic gonadotropin secreted by preimplantation embryos cultured in vitro

S B Fishel et al. Science. .

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.

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