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Blood Group A Antigens on Human Trophoblast Cells

Abstract

THERE is still no adequate explanation for the fact that the placenta, which is foetal in origin and therefore allogeneic in the mother, is not rejected during pregnancy. A question of fundamental importance is whether human trophoblast cells possess HL-A or ABO antigens. Evidence so far is conflicting1–4. We present evidence which suggests that blood group A antigens may be present on human trophoblast cells, but at low surface density.

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LOKE, Y., BALLARD, AC. Blood Group A Antigens on Human Trophoblast Cells. Nature 245, 329–330 (1973). https://doi.org/10.1038/245329a0

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