… The primary follicles are most commonly found in the ovarian cortex, and each contains an oocyte at its center. Oocytes originate from primordial germ cells that migrated into the ovary during fetal development. They were once thought to originate from the peritoneal epithelium, which was called the germinal epithelium, but this has now been shown to be incorrect. … *Some of the terminology that refers to "primordial germ cell" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 卵巣皮質中に最も多く見いだされるのは,一次(原始)卵胞(一次濾胞)で,それぞれの中央に卵母細胞が位置する。卵母細胞は胎生期に卵巣に迷入した原始生殖細胞primordial germ cell(生物学では始原生殖細胞という)に由来する。かつては,腹膜上皮に由来すると考えられ,腹膜上皮を胚上皮と呼んだが,まちがいであることが明らかになった。… ※「primordial germ cell」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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