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To study the expression and localization of Aven in rat and human testis from azoospermic patients with different etiologies and its regulation by estrogens.Experimental study.University research center and private IVF clinic.Six men with obstructive azoospermia, five with hypospermatogenesis, and six with Sertoli cell–only syndrome; male Wistar rats.Testicular biopsies and rat seminiferous tubules...
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