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Opinion: With genetic testing, how much information is too much?

A National Institutes of Health study will evaluate whether to screen tens of thousands of healthy infants for genetic diseases.

This undated microscope image provided by the American Society for Reproductive Medicine in January 2018 shows a trophectoderm biopsy, in which cells from the outer layer of an embryo that develop into the placenta and amniotic membranes are removed and can be used for genetic testing. (ASRM via AP)