Anti-H3-3A antibodies are used in the immunodetection of the protein H3.3 histone A. It is notably widely expressed in many tissue types. Synonyms for this target antigen include H3-3B, H3.3A, H3F3, H3F3A, histone H3.3, H3 histone family member 3A, H3 histone, family 3A, and BRYLIB1. H3-3A gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species.