在哺乳动物中,新鲜射出的精子尚未获得渐进运动能力或受精能力,它们必须通过一系列的生理和生化变化来获得这种能力,这一过程统称......

Objective: To determine the effect of different concentrations of heparin, caffeine or calcium ionosphore and incubation......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Background Fenvalerate (FEN) has been demonstrated to be a reproductive toxicant in humans and rodents. However,little i......