Prenatal diagnostics: Fetal genes in mother's blood


Until the mid-twentieth century, medical examination of a human fetus was surprisingly crude, consisting principally of uterine palpation to assess fetal growth. Over the past 35 years, however, progress in fetal-imaging techniques, combined with measurement of the chemical composition of maternal blood, has substantially improved the assessment of fetal… (More)
DOI: 10.1038/487304a


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