Fig. 2.

Influence of zapotin on cell viability. Cell proliferation was measured with the MTT assay. HeLaWT and HeLaPKCεA/E cells were seeded at a density of ~ 3000 cells/well in a 96-well microplate and exposed for 72 h to 1, 2.5, 5, 10, 15 and 25 μM zapotin. Cell proliferation was quantified spectrophotometrically. The final concentration of DMSO in the medium of controls and zapotin-treated cells was 0.1%.