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Immunocytochemical analysis by TUNEL staining of experimental hepatoma in the animals with no treatment (A), given CNI-1493 only (B), given IL-2 only (3 × 106 units/M2/d) (C), and given IL-2 (30 × 106 units/M2/d) plus CNI-1493 (D). Notice the apoptotic cells with positive brown granules in C and D.
