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To study serologic and gene characteristics of the B(A) blood group of blood donation volunteers in Jilin Province, China.ABO subgroups were identified by standard serologic techniques in ABO typing discrepancy samples from all donors at the Jilin Blood Center (410,354 non-repeat donors). DNA (deoxyribonucleic acid) was collected from each sample and PCR (polymerase chain reaction) was used to sequence...
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