title: The pragmatic utilization of the P-K phenomenon.
mesh_terms: D005512:Food Hypersensitivity / Q000175:diagnosis; D006801:Humans; D006967:Hypersensitivity / Q000175:diagnosis*; D006968:Hypersensitivity, Delayed / Q000276:immunology; D007073:Immunoglobulin E; D007136:Immunoglobulins; D008722:Methods; D008881:Migraine Disorders / Q000175:diagnosis; D012882:Skin Tests
chemical_list: D007136:Immunoglobulins; D007073:Immunoglobulin E