title: A farmer with allergy to cows.
mesh_terms: D000382:Agricultural Workers' Diseases / Q000209:etiology*; D000818:Animals; D002417:Cattle / Q000276:immunology*; D009783:Dermatitis, Occupational / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012882:Skin Tests