Fig. 2 – Production of extracellular nitrite in Raw 264.7 cells stimulated with LPS (10 lg/mL) for 24 h in the presence of hexane,
chloroform, EtOAc, and n-butanol fractions at 25 and 50 lg/mL. Concentrations of 100, 300, and 600 lg/mL of n-butanol
fraction were also evaluated. Data are expressed as the mean ± SD from two independent experiments and quantified using
Greiss reagent. Bars different letters (a–e) are significantly (P > 0.05) different. Comparative analyses versus LPS were made by
Student’s t-test.