title: Direct demonstration of lymphocyte--macrophage cooperation in the absence of physical contact between the two cell types.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000941:Antigens; D002478:Cells, Cultured; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D006462:Hemolytic Plaque Technique; D006736:Horses / Q000276:immunology; D007075:Immunoglobulin M / Q000032:analysis; D008214:Lymphocytes / Q000276:immunology*; D008264:Macrophages / Q000276:immunology*; D008297:Male; D008567:Membranes, Artificial; D051379:Mice; D012756:Sheep / Q000276:immunology; D013154:Spleen / Q000166:cytology
chemical_list: D000941:Antigens; D007075:Immunoglobulin M; D008567:Membranes, Artificial