IHC image of CK(pan) staining in a formalin fixed, paraffin embedded human esophgus cancer tissue (left) and vermiform appendix tissue (right). The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer for 20 minutes. The tissue section was then incubated with mouse anti-CK(pan)（C650025）antibody overnight at 4℃.HRP-conjugated goat anti-mouse IgG was used as secondary antibody. (Original magnification: 100×).