title: Studies of the immune response in vitro. I. Ultrastructural examination of cell types and cluster formation and functional evaluation of clusters.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000941:Antigens; D002452:Cell Count; D002478:Cells, Cultured; D004912:Erythrocytes; D006460:Hemolysin Proteins; D006461:Hemolysis; D007109:Immunity; D008214:Lymphocytes; D008264:Macrophages; D008297:Male; D051379:Mice; D008854:Microscopy, Electron; D010950:Plasma Cells; D012756:Sheep; D013154:Spleen / Q000166:cytology / Q000276:immunology*; D013997:Time Factors
chemical_list: D000941:Antigens; D006460:Hemolysin Proteins