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Science 24 February 1984:
Vol. 223. no. 4638, pp. 816 - 818
DOI: 10.1126/science.6546453
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Articles

Science, Vol 223, Issue 4638, 816-818
Copyright © 1984 by American Association for the Advancement of Science

articles

Human chorionic gonadotropin secreted by preimplantation embryos cultured in vitro

SB Fishel, RG Edwards, and CJ Evans

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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