phagocytophilum group Anaplasma phagocytophilum PMID:1115421 PMID:8195363 NCBITaxon:59888 Rickettsia phagocytophila Anaplasma phagocytophila Cytoecetes bovis PMID:11760958 HGE agent Ehrlichia sp. 'HGE agent' NCBITaxon:75053 Rickettsia phagocytophila ovis Cytoecetes phagocytophila human granulocytic Ehrlichia Ehrlichia phagocytophila agent of human granulocytic ehrlichiosis GC_ID:11 Ehrlichia equi NCBITaxon:946 NCBITaxon:75115 ncbi_taxonomy