2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/119938A strongly momentum-dependent dressed-quark mass function is basic to QCD. It is central to the appearance of a constituent-quark mass-scale and an existential prerequisite for Goldstone modes. Dyson-Schwinger equation (DSE) studies have long emphasised these facts and are a natural way to exploit them.2 pages. Contribution to proceedings of 5th International Workshop on Chiral Dynamics, Theory and Experiment, Durham/Chapel Hill, NC -- 18-22 September 2006Nuclear TheoryHigh Energy Physics - LatticeHigh Energy Physics - PhenomenologyNuclear Experimenttext