Noun
(uncountable, immunology) Any of several staining techniques that are used to detect specific proteins.
(countable, immunology) An application of any such technique.
Source: en.wiktionary.orgIn recent years, the development of immunostaining techniques has allowed investigation of neurons that express specific sets of genes. Source: Internet
Replication sites can be detected by immunostaining daughter strands and replication enzymes and monitoring GFP-tagged replication factors. Source: Internet