The infertility dilemma - The Boston Globe: Intra-cytoplasmic sperm injection revolutionized the treatment of male infertility by joining sperm and egg in an unprecedented manner. ICSI has become one of the most widespread fertility techniques, used in over half of the in vitro fertilization treatments done in the United States.
About one million babies worldwide have been born via ICSI. But as the first generation of ICSI children enters adolescence, one side effect of the technology has become clear: it enables the passing down of genetic defects from parent to child.
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