heteroantibody

[ hĕt′ə-rō-ăntĭ-bŏd′ē ]

n.

An antibody that is specific for antigens originating in species other than that of the antibody producer.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.