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Frequency of each RBC minor antigen among the SCA patients and the donor units. For Rh antigens, conventional and variant antigen expression are shown together. For the e antigen, 68% of patients expressed conventional e, and 31% had partial e (either homozygous or compound heterozygous). Of the e+ units, 4.8% were partial e based on the ce(733G) and ce(1006T) SNPs.
