CD68 and neoplasm: KMP01D, both alone and in combination with vitamin D3, additionally resulted in enhanced apoptosis of tumor-derived CD68+ cells analyzed by the TUNEL assay (Figure 4B; representative example of UICC stage III patient; KMP01D vs. untreated cells: UICC I–III: p < 0.05; combination of KMP01D and vitamin D3 vs. untreated cells: UICC I–III: p < 0.01, UICC IV: p < 0.05).