Fig. 6. Fluorescence of TMRM in G. dibranchiata erythrocytes exposed to the mitochondrial electron transport chain inhibitors rotenone (10 and 100 µmol l^-1, N=10), antimycin (1, 10 and 100 µmol l^-1, N=10, 10 and 4, respectively), azide (1 and 10 mmol l^-1, N=10), and cyanide (0.1, 1 and 10 mmol l^-1, N=4). CCCP (0.10 mmol l^-1, N=10) was added as a positive control for loss of m. Fluorescence emission (595 nm) for each inhibitor is normalized to control conditions (buffer only). Values are means ± S.D. Asterisks represent a significant effect of toxin or CCCP compared to the control value (no toxin) by RM ANOVA (^*P<0.05, ^***P<0.005).