Fig. 7.

a, b Cytolytic activity of stimulated PBMC towards human cancer cells was analyzed by MTT assay. Untreated PBMC, Con A (10 μg/ml) and D. oil (10 μg/ml) treated PBMC, were co-cultured with HCT-116 (a) and SW620 cells (b) for 24 h at different E:T ratios (2.5:1 to 20:1). The results were expressed as mean ± SEM of percentage cell death (n = 3), *p < 0.05 was considered as significant