…These cells then divide and proliferate, branching into many cords that enter the connective tissue inside the genital ridge. These are called sex cords. Primitive germ cells branching in the medulla of the primordium eventually form long, slender seminiferous tubules, which become male-specific spermatogonia. … *Some terminology that mentions "sexual cord" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ついでこの細胞は分裂増殖して生殖隆起内部の結合組織中へ何本もの索状に枝分れしながら入っていく。これを性索sexual cordと呼ぶ。原基の髄質部で枝分れした原始生殖細胞はやがて細長い管状の精細管を形成し,これらの細胞は雄性特有の精原細胞となる。… ※「sexual cord」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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