Demonstration, by gel-diffusion, of an instance of drug allergy.
D004342:Drug Hypersensitivity; D064420:Drug-Related Side Effects and Adverse Reactions; D006801:Humans; D006967:Hypersensitivity; D007154:Immune System Diseases; D020113:Phenolphthalein / Q000009:adverse effects*
D020113:Phenolphthalein
ALLERGY; DRUGS/injurious effects; PHENOLPHTHALEIN/injurious effects