Medical Dictionary

Rickettsiales


Rickettsiales

noun pl Rick·ett·si·a·les \ri-ˌket-sē-ˈā-(ˌ)lēz\

Definition of RICKETTSIALES

:  an order of small pleomorphic gram-negative bacteria that are obligate parasites living in vertebrates or in arthropods which often serve as vectors of those parasitic in vertebrates and are placed in the families Anaplasmataceae, Bartonellaceae, and Rickettsiaceae
March 03, 2015
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