EhrlichiaEhrlichia chaffeensisEhrlichia canisEhrlichiosisBacteriaEhrlichia ruminantiumRickettsiaceaeRickettsiaceae InfectionsAnaplasmaDog DiseasesRNA, Ribosomal, 16STicksDNA, BacterialGram-Positive BacteriaMolecular Sequence DataAnaplasmataceaeGram-Negative BacteriaPhylogenyBacterial ProteinsBacteria, AnaerobicIxodesHeartwater DiseaseDNA, RibosomalDogsSequence Analysis, DNAHorse DiseasesTick-Borne DiseasesPolymerase Chain ReactionAntibodies, BacterialTick InfestationsAnaplasmosisAntigens, BacterialBacteria, AerobicRNA, BacterialArachnid VectorsGenes, BacterialHorsesBase SequenceEscherichia coliAnaplasma phagocytophilumSpecies SpecificityNeorickettsiaAnti-Bacterial AgentsRickettsiaAmino Acid SequenceArthropod VectorsWater MicrobiologyGenes, rRNAAnaplasmataceae InfectionsIxodidaeGenome, BacterialGene Expression Regulation, BacterialBacterial Outer Membrane ProteinsDeerCulture MediaBacteriological TechniquesSoil MicrobiologyRickettsia rickettsiiBabesiaBacterial Physiological PhenomenaGram-Negative Aerobic BacteriaRickettsieaeBartonellaGram-Negative Anaerobic BacteriaDoxycyclineColony Count, MicrobialAnaplasma centraleSeawaterRhipicephalus sanguineusFluorescent Antibody Technique, IndirectDisease ReservoirsChaperoninsSerologic TestsAnaerobiosisOxytetracyclineSequence AlignmentMicrobial Sensitivity TestsCloning, MolecularGranulocytesChromosome WalkingSequence Homology, Amino AcidSulfur-Reducing BacteriaEnterobacteriaceaeBase CompositionSymbiosisPseudomonasAnaplasma marginaleMicroscopy, ElectronBiodegradation, EnvironmentalBacterial AdhesionNymphSequence Homology, Nucleic AcidBacterial InfectionsCross ReactionsChaperonin 60Seroepidemiologic StudiesFresh WaterDNA PrimersFermentationArgas