immunofluorescent stain

[ĭm′yə-nō-flu-rĕsənt, -flô-, ĭ-myōō′-]
n.
  1. A staining method in which an antibody or antigen combines selectively with a fluorescent substance, thus labeling the immunogenic substance and indicating its presence.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.