Abstract
HISTOCOMPATIBILITY antigens were recently suggested by Jones1 to affect human placentation. His observation was based on data of maternal ABO blood groups and placental weights. The immunological disparity of the mother and her foetus was found to be associated with a relatively smaller placenta and vice versa. The expected proportion of ABO incompatible pregnancies for each maternal blood group was calculated from the ABO gene frequencies in the population2.
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SEPPÄLÄ, M., TOLONEN, M. Histocompatibility and Human Placentation. Nature 225, 950–951 (1970). https://doi.org/10.1038/225950a0
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DOI: https://doi.org/10.1038/225950a0
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