FIG. 3.

Enumeration of apoptotic nuclei observed in cortex sections after application of TUNEL (Fig. 2). Open circles, control animals; filled squares, animals treated for 10 days with gentamicin (G); filled triangles, animals treated with netilmicin (N). Each point refers to the pooled counts of one individual animal (n = 6 in each group). Statistical analysis (ANOVA followed by Scheffe post hoc test with P < 0.05): a, significantly higher than control; b, significantly higher than the lower dose; c, significantly lower than the other aminoglycoside at the same dosage.