Analysis of morphology and apoptosis in the liver of tumor-bearing C57BL/6 +/+ mice.

Sections of liver from PBS-injected control mice (A, B), LSA tumor-bearing (C, D), or EL-4 tumor-bearing (E, F) mice were examined after H&E staining (A, C, E) or TUNEL assay (B, D, F) to detect apoptosis. Small and large arrows represent infiltration of tumor cells and lymphocytes, respectively. Dark purple staining in D and F indicates the apoptosis.