SPERM RESEARCH GIVES STERILE MICE FERTILITY From: The Washington Post | Date: November 29, 1994| Author: Rick Weiss | Copyright 1994 The Washington Post. This material is published under license from the Washington Post.  All inquiries regarding rights should be directed to the Washington Post.Copyright information

Researchers have transferred immature sperm cells into sterile male mice, rendering them fertile. The feat promises to speed scientists' understanding of the complex process by which sperm cells mature in the testes, perhaps leading to treatment for some types of male sterility.

The work also could hasten the day when researchers make permanent changes in a family's genetic heritage by altering the make-up of sperm cells. But scientists emphasized that major technical and ethical b...

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