Cytokeratins (CK) 1, 5, 10, and 14 are recognised by 34βE12.Squamous and adeno-squamous carcinomas react withthis antibody, however adenocarcinomas do not. 34βE12stains stratified epithelia, myoepithelial cells, and basalcells in the prostate gland and bronchi, according to studieson normal epithelia.