In the case of iNOS-transfected HCC1806 cells, and reflected by its ability to scavenge the intracellular generated • NO, H-Styr showed the highest inhibitory effects for cell migration, followed by H-Tyros and However, this decreased after 72 hours of culture, mainly following hemin treatment, but also with a maintained activity above 80 % (supplementary fig. ). Moreover, cell treatment with H-Tyros caused the most significant enhancement in cell viability at all time-points with all tested concentrations.