715603.fig.004a
(a)
715603.fig.004b
(b)
Figure 4: Effect of xanthones on the mRNA expression of (a) and (b) cyclin D1 as determined by qRT-PCR for SK-MEL-28 cell line treated with xanthones for 48 h. The values are shown as the mean ± SEM ( ). Treatments significantly different from the untreated control at are presented as * and at as **.