title: The importance of antigen density for immunocytological reactions in vitro.
mesh_terms: D000818:Animals; D000941:Antigens; D002462:Cell Membrane / Q000276:immunology; D002478:Cells, Cultured; D003165:Complement System Proteins; D003720:Densitometry; D004372:Ducks / Q000276:immunology; D005347:Fibroblasts / Q000276:immunology; D006648:Histocompatibility; D007106:Immune Sera; D007962:Leukocytes; D008214:Lymphocytes / Q000276:immunology
chemical_list: D000941:Antigens; D007106:Immune Sera; D003165:Complement System Proteins