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Definition of Immunotoxin

Immunotoxin: A hybrid molecule created by coupling an antibody or antigen with part or all of a toxin. The hybrid molecule combines the specificity of the antibody or antigen with the toxicity of the toxin. The possible targets of immunotoxins include cancer cells and cells containing HIV.

Source: MedTerms™ Medical Dictionary
Last Editorial Review: 9/20/2012

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