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An analysis of the number of CAG repeats in exon 1 of the gene was conducted in a group of 228 infertile males with azoospermia (n = 68) and oligozoospermia (n = 160), and in a control group (124 proven fathers) by means of polymerase chain reaction with subsequent fragment analysis on an ALF-Express automated fluorescent analyzer. Allele frequency with the number of CAG repeats ≤ 18 was found to...