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This is the reported example in a Caucasian with the phenotype Jk(a-b-). A strongly reacting antibody was present which was of a single specificity and which could be completely absorbed by either Jk(a+b-) or Jk(a-b+) cells. Since no compatible donors could be found, autotransfusion was done. Family study failed to reveal any other members with the Jk(a-b-) phenotype. The question of a third allele at the Kidd locus is considered.
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Sussman et al. (1975) studied this question.
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