  We study nuclear structure effects on the transparency in high transverse
momentum $(p,2p)$ and $(e,e'p)$ reactions. We show that in the DWIA-eikonal
approximation, even when correlations are included, one can get a factorized
expression for the transparency. This depends only on the average nucleon
density $\rho(r)$ and a correlation function. We develop a technique to include
correlations in a Monte-Carlo Glauber type calculation. We compare calculations
of $T$ using the eikonal formalism and a continuous density, with a Monte Carlo
method based on discrete nucleons.
