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Related to allotypy: idiotype
1. Taxonomy A biological specimen that is the opposite sex of a holotype.
2. Immunology Any of several variants in the constant region of a given class or subclass of immunoglobulins that are caused by allelic variation and differ from individual to individual.
al′lo·typ′ic (-tĭp′ĭk) adj.
al′lo·ty′py (-tī′pē) n.
the condition of being an allotypethe occurrence of allotypes