2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/4570We have proposed a viscoelastic model of the Maxwell stresses due to the disorganized magnetic field in MRI-driven MHD turbulence. Viscoelastic fluids in the laboratory are known to produce jet-like structures under the action of a rotating sphere. Here we argue that a similar mechanism may help explain jets in protostellar systems. Such jets would be driven not by large-scale organized magnetic fields, but by the mean-field stresses of small-scale tangled magnetic fields.5 pages. Talk at the IAOC Workshop, "Galactic Star Formation Across the Stellar Mass Spectrum," La Serena, Chile, March 2002; to be published in the ASP Conference Series, edited by J. M. De BuizerAstrophysicstext