Molecular basis of antigenic variation in african trypanosomes

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healthcare

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paper

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Fra

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Abstract African trypanosomes, which cause sleeping sickness in man and other mammals, are able to evade immune destruction in their hosts by altering the expression of a major cell surface molecule, the variant surface glycoprotein (VSG). The VSGs are encoded by a multigene family, and antigenic variation occurs when the trypanosome switches from expression of one VSG gene to another. This switching process involves changes in the arrangement of the trypanosome genomic DNA.

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