Also called plasma cells. Lymphocyte cells that produce various immunoglobulins. They are the main arm of humoral immunity. They are found in large numbers in lymph nodes stimulated by antigens, and often appear in granulation tissue of chronic inflammation. The cytoplasm is strongly basophilic, and the nucleus is circular and wheel-like, and is eccentrically located. They are 2 to 3 times larger than lymphocytes. The cytoplasm contains a large amount of RNA. When viewed under an electron microscope, the cytoplasm is rich in rough endoplasmic reticulum. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
プラスマ細胞ともいう。各種の免疫グロブリンをつくり出すリンパ球系の細胞。体液性免疫のおもなにない手である。抗原の刺激を受けたリンパ節に多数認められ,慢性炎症の肉芽組織中に現れることが多い。細胞質は強い好塩基性を示し,核は車輪状の円形で偏在している。大きさはリンパ球の2~3倍。細胞質内には RNAが多数含まれている。電子顕微鏡で見ると,細胞質には粗面小胞体が豊富である。
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