Figure 4From: Effect of all-trans retinoic acid on the proliferation and differentiation of brain tumor stem cellsGrowth curves of BTSCs in different groups(the mean of optical density values measured for each group as the vertical axis, and the growth days as the horizontal axis). The results are shown as mean ± SD of four different experiment. Data of each day was analyzed by one-way ANOVA with Dunnett t test. The growth curves of the ATRA group, ATRA/growth factor group and growth factor group rise faster than that of the control group(P < 0.01). While there were no statistically significant between the ATRA/growth factor group and growth factor group(P > 0.05).Back to article page