title: Identification and antigenic typing of Rickettsia tsutsugamushi in naturally infected chiggers (Acarina: Trombiculidae) by direct immunofluorescence.
abstract: Rickettsia tsutsugamushi organisms were detected and typed antigenically by direct immunofluorescence in mites from laboratory-maintained infected colonies of Leptotrombidium (Leptotrombidium) fletcheri and L. (L.) arenicola. Rickettsiae were identified most readily in unengorged larvae, but were also discernable in engorged larvae and all post-larval stages of the vectors.
mesh_terms: D000941:Antigens; D005455:Fluorescent Antibody Technique; D007814:Larva / Q000382:microbiology; D008925:Mites / Q000382:microbiology*; D012285:Orientia tsutsugamushi / Q000276:immunology / Q000302:isolation & purification*; D014324:Trombiculidae / Q000382:microbiology*
chemical_list: D000941:Antigens