title: A study of the heat-labile antigen of Treponema pallidum.
mesh_terms: D000937:Antigen-Antibody Reactions; D000941:Antigens / Q000032:analysis*; D006358:Hot Temperature; D009113:Muramidase / Q000494:pharmacology; D010400:Penicillin G / Q000494:pharmacology; D010447:Peptide Hydrolases / Q000494:pharmacology; D013696:Temperature; D014210:Treponema pallidum / Q000187:drug effects / Q000276:immunology*
chemical_list: D000941:Antigens; D009113:Muramidase; D010447:Peptide Hydrolases; D010400:Penicillin G