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Histological effects of IPNs. (A) Detection of apoptosis in tumor tissues by TUNEL assay (green). Cell nuclei were counterstained with Hoechst (blue). (B) Images of tumor tissues stained by Ki67 immunohistochemistry. Nuclei were stained blue, and Ki67-positive cells were stained brown. (C) Histological observation of tumor tissues and major organs by H&E.
