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oogonium
An oogonium (plural oogonia) is a small diploid cell which on maturation forms a primordial follicle in a female fetus or the female gametangium of certain thallophytes. ==In the mammalian fetus== (詳細はmitosis early in fetal development from primordial germ cells. In humans they start to develop between weeks 4 and 8 and are present in the fetus between weeks 5 and 30.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「oogonium」の詳細全文を読む
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