Electroproduction in deep inelastic scattering at HERA is
studied in a model considering a finite sum of gluon ladders, associated
with a truncation of the BFKL series. The approach contains the bare
two gluon exchange and both one and two rungs contributions. The model
is fitted to the data on the inclusive structure function F_2(x,Q^2)
in the region x<0.025 and 0.045<Q^2<1500 GeV^2, with a good
agreement. Such a description for a large span in Q^2 is obtained
through a suitable modeling of the remaining non-perturbative
background.

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