Models with extra dimensions may give new effects visible at future
experiments. In these models, bulk fields can develop localized corrections to
their kinetic terms which can modify the phenomenological predictions in a
sizeable way. We review the case in which both gauge bosons and fermions
propagate in the bulk, and discuss the limits on the parameter space arising
from electroweak precision data.Comment: Presented at Matter To The Deepest: Recent Developments In Physics of
Fundamental Interactions, XXVII International Conference of Theoretical
Physics, Ustron 15-21 September 2003, Polan
