Medical Definition of anaplasma
1 capitalized : a genus of parasitic, gram-negative, nonmotile bacteria of the family Anaplasmataceae that are transmitted chiefly by ticks and biting flies and infect the red blood cells of humans and animals—see anaplasmosis
2plural anaplasmas or anaplasmata \-mət-ə\play : any bacterium of the genus Anaplasma
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