  We present preliminary lattice results for the nonperturbative tensor
structure of the vector and axial-vector quark-antiquark vertices in QCD. Our
lattice calculations are for $N_f=2$ mass-degenerate Wilson fermion flavors
whose quark mass values include an almost physical one. We compare our lattice
results with the corresponding continuum solutions of the inhomogeneous
Bethe-Salpeter equations in a rainbow-ladder truncation. We find similarities
in the momentum dependencies of the form factors but also clear deviations at
low momentum.
