CD68 and neoplasm: To determine the histogenesis of sT-induced neoplasia, tumors from UbcCreERT2; ROSAsT; p53flox/flox mice were immunostained with markers for various lineages: CD45 (pan-lymphocyte), CD68 (macrophage), α-smooth muscle actin (ASMA-smooth muscle), cytokeratin 14 (epithelial), cytokeratin 8 (epithelial), neural adhesion molecule (NCAM).