Figure 1

Toxicity of extract of SN through MTT cell proliferation assay. Huh-7 cells were plated at the density of 2 × 10⁴ in 96 well plates. After 24 h cells were treated with different concentrations of herbal extracts and control consisted of solvent in which compound dissolved. After 24 h incubation period add MTT solution to all wells and incubated for 3-4 h at 37°C.Viable cells convert MTT to purple formazan crystal. Added DMSO to dissolve the formazan crystals and read absorbance at 570 nm and 620 nm.