title: Immune responses in vitro. IX. Role of cell clusters.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000921:Antibody-Producing Cells / Q000276:immunology*; D000941:Antigens; D002417:Cattle / Q000276:immunology; D002448:Cell Adhesion; D002469:Cell Separation; D002478:Cells, Cultured; D004912:Erythrocytes / Q000276:immunology; D005333:Fetus; D005455:Fluorescent Antibody Technique; D006462:Hemolytic Plaque Technique; D007106:Immune Sera; D008214:Lymphocytes / Q000276:immunology*; D008264:Macrophages; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008854:Microscopy, Electron; D012756:Sheep / Q000276:immunology
chemical_list: D000941:Antigens; D007106:Immune Sera