顆粒球
白血球のうち、好中球、好酸球、好塩基球の総称で、細胞内に顆粒が顕著に見られる。
細胞名や細胞内の構造オルガネラに関連する用語: | 雄性前核 雄性配偶子 頂端細胞 顆粒球 顆粒球コロニー形成細胞 顆粒球マクロファージコロニー形成細胞 顆粒細胞 |
顆粒球
顆粒球
(granulocyte から転送)
出典: フリー百科事典『ウィキペディア(Wikipedia)』 (2024/04/07 20:33 UTC 版)
顆粒球(かりゅうきゅう、英: granulocytes)は白血球の一種で、自然免疫系を担う細胞であり、細胞質内に特異顆粒が存在することが特徴である[1]。これは、多形核白血球(polymorphonuclear leukocytes、PMN、PML、PMNL)とも呼ばれ、核の形が変化して、通常は3つの小葉に分かれている特徴がある。これにより、単核無顆粒白血球とは区別される。多形核白血球という用語は、顆粒球の中で最も多い好中球(好中性顆粒球)を指すことが多く[2]、他の種類(好酸球、好塩基球、肥満細胞)は小葉の数が少ない特徴がある。顆粒球は、骨髄で顆粒球形成によって産生される。
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