title: The complex world of adverse reactions.
mesh_terms: D000936:Antigen-Antibody Complex; D003167:Complement Activation / Q000187:drug effects; D003287:Contrast Media / Q000009:adverse effects*; D004342:Drug Hypersensitivity / Q000276:immunology*; D006801:Humans
chemical_list: D000936:Antigen-Antibody Complex; D003287:Contrast Media