A novel observation on grouping anomaly: The phenomena mimicking the Bel genetic variant of the ABO blood groups

Conclusion: The unusual case of erroneous reversed grouping was attributed to complement-mediated hemagglutination inhibition. The positive eluate obtained from sensitized RBCs of the mother was considered to be due to a contamination of fetal RBCs in maternal circulation entered during her postpartum phase of pregnancy. It could also be due to a conversion of H to B antigen no matter in trace amount by the fetal B group-specific transferase percolated into maternal circulation.
Source: Asian Journal of Transfusion Science - Category: Hematology Authors: Source Type: research