title: "Doughnut" granulomas in Q fever.
mesh_terms: D000328:Adult; D001853:Bone Marrow / Q000648:ultrastructure; D006099:Granuloma / Q000473:pathology*; D006801:Humans; D008099:Liver / Q000648:ultrastructure; D008297:Male; D011778:Q Fever / Q000473:pathology*