Close  
Figure 2: In vitro cytotoxicity of all fractions of Clerodendrum viscosum leaves. Cells were treated with increasing concentrations of compounds for 48 h; cell proliferation and viability were determined with WST1 cell proliferation reagent (a) A549 (0–200 μg/mL of all fractions), (b) MCF7 (0–200 μg/mL of all fractions), (c) U87 (0–300 μg/mL of all fractions) and (d) WI38 (0–200 μg/mL of all fractions). Results were expressed as cell viability (% of control). All data are expressed as mean } standard deviation (n = 6). *P . 0.05, **P . 0.01 and ***P . 0.001 versus 0 μg/mL 
