2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38085The experimental status of the spin-dependent structure functions as obtained from the deep inelastic scattering experiments at CERN, SLAC, and DESY is reviewed. All data show a violation of the Ellis-Jaffe sum rule. The Bjorken sum rule is found to be valid and is tested to the 10 % level.20 pages, LaTeX, Invited plenary talks given at the PIC96, Mexico City, June 1996 and SPIN96, Amsterdam, September 1996, conferences. Proceedings to be published by World ScientificHigh Energy Physics - Experimenttext