FIG. 7.

Structural analogues (quinoline and isoquinoline) demonstrate partial protection against long-term gentamicin damage but do not protect against short-term gentamicin. A Quinoline and isoquinoline partially protected against long-term gentamicin (50 μM × 6 h) damage (*F(5, 57) = 30.71, p < 0.05, one-way ANOVA). B In contrast, none of the structural analogues protected against short-term (400 μM × 1 h) gentamicin-induced hair cell death. Data bars represent the mean hair cell survival of ten fish. Error bars = ±1 SD from the mean.