2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/28049We comment some recent unexpected experimental results on proton/deuteron deep inelastic scattering off water molecules in H2O-D2O mixtures (C.A. Chatzidimitrou-Dreismann et al. Phys. Rev. Lett. 79, 2839 (1997)) where a strong dependence of the ratio of proton/deuteron cross sections on the composition of the mixture was observed. We propose an explanation of this new effect based on the two-fluid picture of water which arises from the theory of QED coherence in condensed matter.3 pages LATEXStatistical MechanicsMaterials Sciencetext