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A full next to leading order (NLO) analysis is carried for the functions $F_2, F_{\\rm Glue}$ and the longitudinal one $F_L$ in $ep$ scattering, and for $x F_3$ in neutrino scattering. The results of the calculations are compared with data (HERA) in the range $x\\leq 0.032, 10 gev^2\\leq Q^2\\leq 1 500 gev^2$. 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