The small blood vessels of the mucous membrane of the lips with special reference to the ulcer diathesis.
D001808:Blood Vessels; D004198:Disease Susceptibility; D006801:Humans; D008046:Lip; D009092:Mucous Membrane; D010437:Peptic Ulcer; D014456:Ulcer
BLOOD VESSELS; LIPS; MUCOUS MEMBRANE; PEPTIC ULCER