Our research article on stability of pattern formation in systems with dynamic source regions appeared last week in Physical Review Letters, https://doi.org/10.1103/PhysRevLett.130.098402. The work is based on novel analytical framework developed by Maciej Majka. We showed that gene expression patterns can form stable domains with well-defined overlap region, yet without external feedback these domains can still shift. Thanks to analytical description we were able to provide stability conditions for all possible two-gene regulatory network motifs. This work has possible implications for fruit fly pattern specification, limb formation and spinal cord development.