问:在噬菌体侵染细菌的实验中,怎样知道进入细菌细胞的是噬菌体的DNA而不是蛋白质呢?答:噬菌体是有蛋白质的外壳包裹着DNA的简单......

People are living in a world that acquires almost everyone to chase efficiency and speed.The real inner quality of daily......

一、历史发展概况 Landsteiner及Chase(1940)首先发现豚鼠细胞免疫的被动转移现象。Chase(1945)进一步证明豚鼠对结核杆菌的迟发......

Hi， Are the monsters ready to go？ Ten say yes. Zero say no.　　嗨，小怪物们，准备好了吗？十个说好了。0个说没有。　　Nine monster......