in this review, we aim to examine the effect of extrinsic and intrinsic factors on spermatogenesis process taking into account a complex signaling pathway. primarily, it is suggested that retinoic acid (ra) has a vital function in spermatogenesis process and it is considered to be essential for completion of spermatogonia into mature spermatozoa. in the present review, the key effects of retino...

The theoretical framework for this study is research in the areas of language testing andreading. and overview of language testing and current developments in language testing research,including factors that affect test performance and authentic assessment. Test type as the taskvariable, test-taking strategies and gender as the reader variable, and authenticity as the textvariable were selected...

Background: Dysmenorrhea is a common problem especially in young women that can have adverse effects on quality of life. Aim: to investigated the effect of pure and impure honey on severity of pain, amount of bleeding, and duration and interval of menstrual cycles in female students with primary dysmenorrhea Method: The current study was a single-blind crossover design which was carried out on ...