Rickettsial endocarditis.
D001021:Aortic Valve / Q000473:pathology; D004697:Endocarditis, Bacterial / Q000188:drug therapy*; D006801:Humans; D008297:Male; D012282:Rickettsia Infections / Q000188:drug therapy*; D013752:Tetracycline / Q000627:therapeutic use*
D013752:Tetracycline