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Creation of male/female embryos shows need for federal oversight
[Chicago Final Edition]
Chicago Tribune - Chicago, Ill.
Subjects: Research; Bans; Federal funding; Regulation; Embryos; Bioethics
Author: Scott Anderson Scott Anderson co
Date: Jul 13, 2003
Start Page: 9
Section: Commentary
Abstract (Document Summary)

Why use male cells in female embryos? This is just simple (if naive) practicality: Y chromosomes can be distinguished with a quick and inexpensive test. If the implanted cells became incorporated into the embryo, they would be easy to spot. So [Norbert Gleicher]'s team placed up to three male cells into female embryos that were 21 days old. Some of the embryos died immediately, and others developed abnormalities, but 12 of the embryos continued to develop, along with their contingent of implanted male cells.

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