title: Demonstration of the agent of Legionnaires' disease in tissue.
mesh_terms: D001419:Bacteria / Q000302:isolation & purification*; D001431:Bacteriological Techniques; D006652:Histological Techniques; D006801:Humans; D007877:Legionnaires' Disease / Q000453:epidemiology / Q000382:microbiology*; D008168:Lung / Q000382:microbiology*; D010414:Pennsylvania; D013194:Staining and Labeling