[Electron microscopic studies on germinal center cells of the spleen].
D000818:Animals; D002196:Capillaries; D008214:Lymphocytes; D008264:Macrophages; D008854:Microscopy, Electron; D010950:Plasma Cells; D051381:Rats; D012159:Reticulum; D013154:Spleen / Q000166:cytology*