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Genotype and allele frequencies of HLA DQα locus were determined in a Qatari population sample using polymerase chain reaction (PCR) amplified DNA fragment and hybridization to allele specific oligonucleoid probes in a reversed dot blot format. Among the 200 individuals studied 21 genotypes representing products of 6 HLA DQα alleles have been differentiated, and the frequencies ranged from 0.0775...
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