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PCR detection of coinfection in EDTA-blood samples from two representative dogs, obtained with E. canis or E. chaffeensis species-specific primers or with Bartonella or Rickettsia genus primers. Controls include uninfected EDTA-dog blood and culture-grown E. canis, E. chaffeensis, B. vinsonii, and R. rickettsii DNA. Numbers to the left of the gel are molecular sizes (in base pairs).
