title: Lymphoid organs of teleost fish. III. Splenic lymphoid tissue of Rutilus rutilus and Gobio gobio.
abstract: The ultrastructure of splenic lymphoid tissue of two teleost fish, Rutilus rutilus and Gobio gobio, constitutes discrete foci around the small arteries and "melano-macrophage" centres. It contains small and medium lymphocytes, lymphoblasts, macrophages and plasma cells. Plasmacytopoiesis and macrophage-lymphocyte clusters have been described and the significance of "melano-macrophage" centres and macrophage-lymphocyte clusters is discussed.
mesh_terms: D000818:Animals; D004912:Erythrocytes / Q000648:ultrastructure; D005399:Fishes / Q000276:immunology* / Q000648:ultrastructure; D008214:Lymphocytes / Q000648:ultrastructure; D008221:Lymphoid Tissue / Q000276:immunology / Q000648:ultrastructure*; D008264:Macrophages / Q000648:ultrastructure; D009000:Monocytes / Q000648:ultrastructure; D010950:Plasma Cells / Q000648:ultrastructure; D012159:Reticulum / Q000648:ultrastructure; D013154:Spleen / Q000276:immunology / Q000648:ultrastructure*