Amblyomma americanum 2 Article 2 Blastocerus dichotomus 2 DNA extraction 2 DNA sequence 2 Ehrlichia chaffeensis 2 Marsh deer 2 RNA 16S 2 Ticks 2 adult 2 amino acid sequence 2 animal experiment 2 animal model 2 autopsy 2 bacterial transmission 2 bacterium detection 2 biosafety 2 blood sampling 2 controlled study 2 deer 2 genotype 2 host pathogen interaction 2 human monocytic ehrlichiosis 2 medical examination 2 molecular diagnosis 2 mortality 2 nonhuman 2 polymerase chain reaction 2 sequence alignment 2 skin defect 2