vector-dominated just as the pionic form factor is. The photon can couple directly to the soliton which ia an extended baryon but by a suitable field re-definition, one can “eliminate" the direct photon coupling and express the form factors entirely vector-dominated with the infinite tower of vector mesons entering into the formula. This result may offer a precise meaning to what was previously considered as a “intrinsic core" attributed to a quark-gluon structure in the two-component model of the nucleon structure [@2comp-NFF; @petronzio]. It furthermore brings a basically new aspect to the solitonic structure of the baryon which is now governed by the vector mesons, not by the Goldstone (pion) field as in the skyrmion with the Skyrme model. What happens to this instanton baryon in hot/dense medium is totally unknown.

At the present stage of our understanding, the holographic approach can make predictions only in the large $\lambda$ and $N_c$ limit, restricted to the zero temperature and matter-free environment. In studying hadron properties in medium, however, it is clear that one has to be able to calculate $1/N_c$ corrections since the hadron masses are locked to the quark condensate as we argued above and in the large $N_c$ limit, 