LL-37 at 2 μM increases the migration of MCF-7 breast cancer cells in a Boyden Chamber assay. The stimulatory effect induced by LL-37 was abrogated when LL-25 at 1 μM was added together with LL-37 in the lower chamber. Control experiments were with medium only in the lower chamber, or with LL-25 in the medium, respectively. The results are given as mean ± standard error of the mean, n = 4. * p < 0.05, ** p < 0.01, ns = non significant.