Deep inelastic scattering, QCD, and generalized vector dominance

We provide a formulation of generalized vector dominance (GVD) for low-x de ep-inelastic scattering that explicitly incorporates the gamma* --> q (q) o ver bar transition and a QCD-inspired ansatz for the (q (q) over bar)p forw ard-scattering amplitude. The destructive interference originally introduce d in off-diagonal GVD is recovered in the present formulation and traced ba ck to the generic structure of two-gluon-exchange as incorporated into the notion of colour transparency. Asymptotically, the transverse photoabsorpti on cross section behaves as (In Q(2))/Q(2), implying a logarithmic violatio n of scaling for F-2, while the longitudinal-to-transverse ratio decreases as 1/lnQ(2).