title: Discordant identical twins. VI. Psoriasis and migraine.
mesh_terms: D004200:Diseases in Twins; D004777:Environment; D005260:Female; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis; D008875:Middle Aged; D008881:Migraine Disorders / Q000235:genetics* / Q000276:immunology; D011565:Psoriasis / Q000235:genetics* / Q000276:immunology
chemical_list: D007075:Immunoglobulin M