1. an assay that shows specific antigens in tissues by the use of markers that are either fluorescent dyes or enzymes (such as horseradish peroxidase);
WordNet (r) 3.0 (2006):
immunohistochemistry
n 1: an assay that shows specific antigens in tissues by the use
of markers that are either fluorescent dyes or enzymes
(such as horseradish peroxidase)