title: Failure of Anaplasma marginale Theiler to survive natural winter conditions on a Dermacentor andersoni = (venustus) infested range.
mesh_terms: D000709:Anaplasma / Q000254:growth & development*; D000712:Anaplasmosis / Q000635:transmission / Q000662:veterinary*; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000635:transmission*; D003080:Cold Temperature; D003870:Dermacentor / Q000382:microbiology*; D004197:Disease Reservoirs / Q000662:veterinary; D004463:Ecology; D005260:Female; D008297:Male; D009922:Oregon; D012621:Seasons; D013987:Ticks / Q000382:microbiology*