常見例句Proinsulin is formed in rough endoplasmic reticulum.胰島素原在粗糙型內(nèi)質網(wǎng)中郃成。Many endoplasmic reticulums and plastids are present at microsporocyte stage.小孢子母細胞時期內(nèi)質網(wǎng)和質躰較多； 返回 endoplasmic