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Researcher at the National Heart, Lung, and Blood Institute engaged in the study of sickle cell anemia, a genetic blood disease which, in the United States, affects primarily Afro-Americans and is caused by an abnormal hemoglobin molecule. A new test, known as chorionic villus biopsy, promises to advance the prenatal diagnosis of genetic blood diseases, including sickle cell anemia, from the second trimester of pregnancy to the first. Tissue from the chorionic villi, hairlike projections of the membrane that surrounds the early embryo, can be removed before the 10th week of pregnancy and analyzed immediately for chromosomal or biochemical defects.
c. 1987
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