title: Studies on an immunosuppressant present in cytoplasmic preparations of beta-hemolytic streptococci.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D003593:Cytoplasm / Q000276:immunology*; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D006460:Hemolysin Proteins / Q000032:analysis; D007114:Immunization; D007117:Immunization, Secondary; D007165:Immunosuppression Therapy; D007958:Leukocyte Count; D051379:Mice; D009929:Organ Size; D012756:Sheep / Q000276:immunology; D013154:Spleen / Q000276:immunology; D013292:Streptococcus agalactiae / Q000276:immunology; D013297:Streptococcus pyogenes / Q000276:immunology*
chemical_list: D006460:Hemolysin Proteins