The name “Alex Ich” is familiar to many League of Legends fans， and with good reason -- this mid laner is a legend of t......

通过在公鸡日粮中添加不同水平亚硒酸钠,研究硒对公鸡睾丸组织中细胞周期基因Cdc25A表达的影响,进而为硒调控精子发生周期和生精细......