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Peer-reviewed veterinary case report

Selection for simple major surface protein 2 variants during Anaplasma marginale transmission to immunologically naïve animals.

Journal:
Infection and immunity
Year:
2007
Authors:
Palmer, Guy H et al.
Affiliation:
Department of Veterinary Microbiology and Pathology · United States

Abstract

Anaplasma marginale, a rickettsial pathogen, evades clearance in the animal host by antigenic variation. Under immune selection, A. marginale expresses complex major surface protein 2 mosaics, derived from multiple donor sequences. However, these mosaics have a selective advantage only in the presence of adaptive immunity and are rapidly replaced by simple variants following transmission.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/17178787/