Figure 1

(A). Photograph of Nigella sativa plant, flower and seeds (inset). (B). Phase contrast microscopic images showing the HepG2 cell morphology of control and treated groups (0.1%, 0.3% and 1% Niegella sativa extract at 24 h).The short black arrow indicates dead cells and the arrow head indicates cell shrinkage. (C, D). Cell proliferation (MTT assay) results of Hep G2 cell line following treatment with Nigella sativa extract at varying concentrations (0.1%, 0.3%,0.5%,0.7% and 1%) for 24 h (C) incubation and 48 h (D). All values are expressed as mean ± SEM from three different replicates.