The cytotoxic effects of isolated L. plantarum 15HN and L. lactis subsp. Lactis 44 Lac secretions on different cancer cell lines at three time points 12, 24, and 48 h. Panels represent; a) MCF-7 (human breast cancer cell line), b) AGS (human gastric cancer cell line) c) HeLa (human cervix cancer cell line), and d) HT29 (human colon cancer cell). 0% concentration: MRS is used as control. A series: L. plantarum 15HN. B series: L. lactis subsp. Lactis 44Lac. Error bars represent the standard deviation of the each mean.