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A prospective study was carried out to identify the association of the DAZL (deleted in azoospermia-like) gene with major semen parameters in 210 men with normal and 467 men with abnormal semen parameters. Primer extension analysis for single nucleotide polymorphisms (SNP) of DAZL and quantitative trait analysis on the association of allele/genotype frequencies, linkage disequilibrium characteristics...
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