The nucleon structure study in nuclear deep inelastic scattering is
considered. It is shown that nuclear data provide a new source of information
about dynamics of parton distributions in the nucleon. An example of the
neutron structure function extraction from the deuteron and proton data is
considered. The limit x→1 of the neutron to proton structure functions
ratio is studied. A link between the deep inelastic scattering off the nucleon
at high x and elastic scattering off nuclei in high Q2 region is
discussed.Comment: 4 pages, 5 figures, Contributed to the Proceedings of the HiX2004
Workshop, 26-28 July 2004, Marseill