Figure 1

MTS assays conducted in CS/pre-miR-29b (A) and in PEI/pre-miR-29b (B), which were cultured in the presence of increasing concentrations of pre-miR-29b for 48 and 72 h.

Untreated cells and cells transfected with an unrelated RNA control were used as negative controls for cytotoxicity. Ethanol treated cells were used as positive control to induce toxicity. Mean percentage values relative to the untreated cells and standard error of the mean in 3 independent experiments are shown. ANOVA, mean ± SD.