نتایج جستجو برای: daz
تعداد نتایج: 317 فیلتر نتایج به سال:
In this study, microstructural evaluation and mechanical properties of similar TLP bonded of Inconel 600 by using of BNi-2 interlayer were investigated. The bonding tests were carried out at 1050°C and 1100°C for 5-45 min which homogenization treatment was performed on the best of the bonded samples. Results showed that Ni-B eutectic compound was formed in the a-thermally solidification zone (A...
مقدمه: ناباروری یکی از مشکلات عمده در زندگی افراد نابارور است. یکی از دلایل عمده ی ژنتیکی ناباروری وقوع حذف ها در کرومزوم y است که با فراوانی 1 تا 15 درصدی در افراد مبتلا به آزوسپرمی و الیگواسپرمی شدید گزارش شده است. بر روی کروموزوم y 3 ناحیه به نام عوامل آزوسپرمی (azoospermia factor یا azf) شناخته می شوند. این سه ناحیه با عناوین azfa، azfb و azfc به عنوان ناحیه ی اسپرم سازی تعیین شده اند. در...
BACKGROUND The genes boule and dazl are members of the DAZ (Deleted in Azoospermia) family encoding RNA binding proteins essential for germ cell development. Although dazl exhibits bisexual expression in mitotic and meiotic germ cells in diverse animals, boule shows unisexual meiotic expression in invertebrates and mammals but a bisexual mitotic and meiotic expression in medaka. How boule and d...
Dazl protein expression in adult rat testis is up-regulated at meiosis and not hormonally regulated.
The Y-chromosomal DAZ (deleted in azoospermia) gene and the autosomal Dazl (deleted in azoospermia-like) gene are two crucial factors for the achievement and maintenance of spermatogenesis. Whereas Y-chromosomal DAZ is present in certain primates, it is lacking in rodents and other species. We have investigated the expression of Dazl protein during spermatogenesis in the adult rat testis using ...
BACKGROUND FK506 is an important immunosuppressant, which can be produced by Streptomyces tsukubaensis. However, the production capacity of the strain is very low. Hereby, a computational guided engineering approach was proposed in order to improve the intracellular precursor and cofactor availability of FK506 in S. tsukubaensis. RESULTS First, a genome-scale metabolic model of S. tsukubaensi...
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