Fig. 2.

Microscopic investigation (20 ×) of immuno-proliferation activity of 10 µg/ml D. oil on human PBMC after 24 h of treatment (a). Untreated PBMC and Con A treated PBMC were taken as negative and positive controls, respectively. Effect of D. oil (10–80 µg/ml) on proliferation of human PBMC after 24 and 48 h was analyzed by MTT assay. The values were expressed as mean ± S.E.M of three independent observations done in triplicates, *p < 0.05 was considered as significant value