title: Immunosuppressive effect of pneumococcal vaccine contaminated with blood-group-A-like substance.
mesh_terms: D000017:ABO Blood-Group System / Q000276:immunology*; D000328:Adult; D001428:Bacterial Vaccines / Q000009:adverse effects*; D004340:Drug Contamination; D006801:Humans; D007108:Immune Tolerance / Q000187:drug effects*; D022242:Pneumococcal Vaccines; D014611:Vaccination / Q000009:adverse effects*
chemical_list: D000017:ABO Blood-Group System; D001428:Bacterial Vaccines; D022242:Pneumococcal Vaccines