The term _____ is used to describe polymorphic antigens that vary between individuals of the same species.

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Alloantigens are antigens that differ between members of the same species, typically due to genetic variation between individuals. This can lead to an immune response if an individual is transfused with blood or tissue that expresses alloantigens that they do not possess. Xenoantigens are antigens that are present on cells of other species, immunnoantigens are simply substances that can induce an immune response, histoantigens are antigens that are present on an individual's own tissues, and autoantigens are antigens that are recognized by the immune system as "self" and are not typically targeted for an immune response.

The Term _____ Is Used to Describe Polymorphic Antigens That