List of Articles retinoic acid Open Access Article Abstract Page Full-Text 1 - Retinoic Acid Determines the Fate of Spermatogonia A. Yilmaz A. Ozdal Gokdal Open Access Article Abstract Page Full-Text 2 - Effect of hypervitaminosis A in the embryonic period and study effects on testosterone and gonadotropin hormons in mature period in male Rat. لیلی حسین پور عبدالحسین شیروی محمدتقی قربانیان