title: Gradient titration of agglutinating antibodies, a new biological method.
mesh_terms: D000373:Agglutinins / Q000032:analysis*; D000818:Animals; D001798:Blood Proteins; D002464:Cell Migration Inhibition; D004912:Erythrocytes / Q000276:immunology; D006388:Hemagglutinins / Q000032:analysis*; D006801:Humans; D007106:Immune Sera; D007114:Immunization; D008722:Methods; D011817:Rabbits / Q000276:immunology; D012756:Sheep / Q000276:immunology
chemical_list: D000373:Agglutinins; D001798:Blood Proteins; D006388:Hemagglutinins; D007106:Immune Sera