626259.fig.007
Figure 7: Evaluation of the difference in the oxide-reduction ability between E. dispar and E. histolytica using the NBT reduction assay. The experiment was repeated three times independently in triplicates. Results describing the oxide-reduction ability of both strains, measured by reduction of NBT, indicate that after 60 min incubation, there is not a significant change in the amount of formazan produced (letters on top connected by the same line segment); however, between 30 and 60 min there is a significant difference appreciated in both species (letters on top). Moreover, species compared with their reciprocal times also showed a significant difference ( ) (different letters on bottom connected by the same line segment).