Summary
Alpha-1-fetoprotein (AFP) was demonstrated on the surface of leukocytes from fetuses, newborns, and pregnant women using an immunofluorescent membrane staining technique with fluorescein-conjugated anti-AFP serum. Evidence is presented that fetal cells can be detected in the maternal circulation using membrane-bound AFP as a marker.
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Kulozik, A., Pawlowitzki, I.H. Fetal cells in the maternal circulation: Detection by direct AFP-immunofluorescence. Hum Genet 62, 221–224 (1982). https://doi.org/10.1007/BF00333523
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DOI: https://doi.org/10.1007/BF00333523