| 单词 | vitelline membranes |
| 释义 | vitellus /vi- or vī-telˈəs/noun (pl vitellˈī)The yolk of an egg ORIGIN: L, a yolk; a transferred use of vitellus, from vitulus a calf vitˈellary adjective
vitellˈicle noun A yolk sac vitelligenous /-ijˈ/ adjective Producing yolk vitellˈin noun A phosphoprotein present in yolks of eggs vitellˈine noun A vitellus adjectiveVitellary vitelline membrane noun (zoology) A protective membrane formed around a fertilized ovum to prevent the entry of further sperms |
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