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Geographical distributions in Japan of the ticks from which the rickettsial isolates studied were isolated. (a) I. persulcatus; (b) I. monospinosus; (c) I. ovatus; (d) H. flava; (e) D. taiwanensis; (f) A. testudinarium. Green dots indicate the distributions of the ticks, and the red dots indicate the area where the ticks harboring the rickettsiae were collected.
