  Conductance through a system consisting of a wire with side-attached quantum
dots is calculated. Such geometry of the device allows to study the coexistence
of quantum interference, electron correlations and their influence on
conductance. We underline the differences between "classical" Fano resonance in
which the resonant channel is of single-particle nature and "many-body" Fano
resonance with the resonant channel formed by Kondo effect. The influence of
electron-electron interactions on the Fano resonance shape is also analyzed.
