常見(jiàn)例句Proinsulin is formed in rough endoplasmic reticulum.胰島素原在粗糙型內(nèi)質(zhì)網(wǎng)中合成。Many endoplasmic reticulums and plastids are present at microsporocyte stage.小孢子母細(xì)胞時(shí)期內(nèi)質(zhì)網(wǎng)和質(zhì)體較多； 返回 endoplasmic