To further elucidate the tumor-killing effect of Sgc8c-M, we performed immunohistochemical (IHC) characterization of cytokeratin 19 (CK19, epithelial cytoskeleton marker), Ki67 (proliferation marker), and phosphohistone H3 (pHH3, mitosis marker) after the tumor volume had been reduced to approximately half of its initial size. Here, KRT19 is linked to neoplasm.