Fig. 6. IBAT TUNEL staining. (A) Control, 22±1°C, (B) control, 4±1°C, (C) L-Arg, 22±1°C, (D) L-Arg, 4±1°C, (E) L-NAME, 22±1°C, (F) L-NAME, 4±1°C. Arrows indicate apoptotic nuclei (see text for details). Scale bars, 20 µm.