1. Tagging or "labeling" of antibody with a fluorescent dye so that it may be observed with a microscope (using ultraviolet light), as a means of studying the origin, distribution, and sites of reaction (with antigen) in tissues.
2. Microscopic detection of cellular and tissue chemical components (DNA, RNA, proteins, polysaccharides) with the aid of fluorochromes bound to these components.
Farlex Partner Medical Dictionary © Farlex 2012