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Trophoblast cells in peripheral blood from pregnant women
The presence of human trophoblast cells in maternal blood was investigated by the use of flow cytometry and a monoclonal antibody reacting against a specific antigen present on the surface of these cells. Three types of cells derived from the placenta could be detected in the peripheral blood obtained from women between 6 weeks' gestation and term. One group of cells were polynucleated, a second group were diploid, and a third consisted of anucleate cells derived from the syncytiotrophoblast. These cells should be suitable for prenatal diagnosis of chromosomal and biochemical abnormalities.
The presence of human trophoblast cells in maternal blood was investigated by the use of flow cytometry and a monoclonal antibody reacting against a specific antigen present on the surface of these cells. Three types of cells derived from the placenta could be detected in the peripheral blood obtained from women between 6 weeks' gestation and term. One group of cells were polynucleated, a second group were diploid, and a third consisted of anucleate cells derived from the syncytiotrophoblast. These cells should be suitable for prenatal diagnosis of chromosomal and biochemical abnormalities.