Figure 1: Effect of hexane (H), dichloromethane (Di), ethyl acetate (Ac), butanol (B), and aqueous (Aq) fractions from methanol extract of B. papyrifera stem bark on LPS-induced NO production in RAW 264.7 cells. Cells were treated with various 100 μg/ml of BP fractions indicated for 30 min followed by the stimulation with LPS (100 ng/ml) for 24 hr. The data are the mean ± S.E.M. from at least three independent experiments, each performed in duplicate. The asterisks denote the significance levels when compared to control groups. Significantly different from controls, *P<0.05 and **P<0.01