horseradish peroxidase


noun

Histology. an enzyme, isolated from horseradish, that when microinjected can be detected by the colored products of the reaction it catalyzes, used as a tracer, as in tracing the route of a motor neuron from the cell body in the spinal cord to the muscle it innervates.

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Medicine definitions for horseradish peroxidase

horseradish peroxidase

[hôrsrăd′ĭsh]

n.

An enzyme used in immunohistochemistry to label the antigen-antibody complex.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.