Fig. 2
The inhibitory effect of bromelain on colorectal cancer growth was confirmed using a xenotransplantation assay performed in a zebrafish system. (A) In HCT116 cells, the percentage of cells in embryos decreased after exposure to bromelain from 72% (vehicle) to 47% (100 μg/ml) and 18% (300 μg/ml). An increase in the percentage of cells in embryos was found from 22% (vehicle) to approximately 82% (bromelain). (B) In DLD-1 cells, an increase in the percentage of cells in embryo was found from 6% (vehicle) to approximately 94% (bromelain). The figure is representative of the fluorescence intensity in embryos. Data are presented as the mean±SD. ** p<0.001.