Anti-HA Antibody The monoclonal antibody Anti-HA tag recognizes the influenza hemagglutinin epitope (YPYDVPDYA) which has been used extensively as a general epitope tag in expression vectors. The specificity of this antibody allows for unambiguous identification of the tagged protein. Anti-HA tag can be used for detection of HA-tagged proteins by Western Blot or immunoprecipitation. Applications: Detection of HA-tagged proteins by Western Blot or immunoprecipitation. Isotype: Mouse IgG1