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January 4, 1971

Medical News

JAMA. 1971;215(1):27-36. doi:10.1001/jama.1971.03180140007003

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Work with reimplanting ova moves another step ahead  Reimplanted ovum goes through five cell divisions in British laboratory; investigator says further study may lead to methods of preventing congenital defects—and may also produce a better method of contraceptionA pair of British investigators are studying the technical problems of reintroducing an ovum into the human uterus after successful in vitro fertilization of a human egg. and incubating it through several cell divisions."One would anticipate in the very near future that these problems will be overcome," Patrick Steptoe, FRCS, recently told the District of Columbia Medical Society. The consultant gynecologist at Oldham General Hospital, Lancashire, England, delivered the society's Crowley Memorial Lecture in Washington, DC.So far, Dr. Steptoe and Cambridge embryologist R. G. Edwards, MD, have successfully cultured five eggs from three women to the blastocyst stage. The eggs were fertilized in vitro with the husbands' spermatozoa.Dr.