title: Some unsolved problems with vaccines.
mesh_terms: D000276:Adjuvants, Immunologic; D000818:Animals; D000918:Antibody Specificity; D000941:Antigens / Q000302:isolation & purification; D006801:Humans; D007109:Immunity; D012749:Sexually Transmitted Diseases / Q000517:prevention & control; D014121:Toxoids / Q000009:adverse effects; D014612:Vaccines / Q000008:administration & dosage / Q000009:adverse effects*
chemical_list: D000276:Adjuvants, Immunologic; D000941:Antigens; D014121:Toxoids; D014612:Vaccines