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The present study was performed to determine whether expansion of the CAG repeat in exon 1 of the AR gene is correlated with non-obstructive azoospermia (NOA) in Iranian infertile men.The CAG repeat length was investigated in 307 Iranian men, 104 infertile men with NOA and 203 fertile controls using primers flanking the CAG repeat region in exon 1 of the AR gene.The most common allele in the patients...