Aim: To investigate the effect of aging on the expression of nitric oxide synthase I (NOS I) and the activity of NOS in rat penis. Methods: Sixty male rats from
To pretreat sperm at various temperatures before exposure to human papillomavirus(HPV)16DNA fragments and to assess the efficiency of HPV carrier sperm to trans
<正>Aim: To investigate the impact of organophosphorous pesticide exposure and other risk factors on the semen quality of Chinese peasants. Method: Questionnair