title: Letter: The basis for conflicting results obtained in studies on the plaque-forming cell response to type III pneumococcal polysaccharide.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000921:Antibody-Producing Cells; D000961:Antilymphocyte Serum; D004912:Erythrocytes / Q000276:immunology; D006462:Hemolytic Plaque Technique; D007457:Iodine Radioisotopes; D051379:Mice; D008815:Mice, Inbred Strains; D011135:Polysaccharides, Bacterial; D013045:Species Specificity; D013296:Streptococcus pneumoniae / Q000276:immunology*
chemical_list: D000961:Antilymphocyte Serum; D007457:Iodine Radioisotopes; D011135:Polysaccharides, Bacterial