FL3 and FL37 decrease apoptosis in Caco2-BBE cells. Cells were treated with increasing concentrations of FL3 or FL37 for 16 hours A, Cell viability using lactate dehydrogenase assay; *P < 0.05 versus vehicle; n = 8 per treatment across 2 separate experiments. B, Representative Western blots of PCNA protein expression, a marker of cell proliferation. C, Apoptosis measured by enzyme-linked immunosorbent assay; *P < 0.05 versus vehicle; n = 4 per treatment. D, TUNEL-positive cells were quantified across 20 fields; *P < 0.05 versus vehicle.