Within the tumor tissue, the IHC expression of Bcl-2, Bax, and Bad in luminal cells was positively correlated with their expression in myoepithelial cells (r = 0.7; r = 0.4; r = 0.2; P<0.01), but the three markers were generally more expressed in the luminal cells than in the myoepithelium (P<0.05) (Fig 1E and 1F). Here, BAX is linked to neoplasm.