  We present two projects related to interaction in the Virgo cluster. In the
first section we draw a quantitative comparison of the distribution of the
galaxies and the intra-cluster gas taking into account that the Virgo cluster
has an irregular structure consisting of several subclusters. In the second
section we show hydrodynamic simulations of the interaction (ram pressure
stripping) of a galaxy like M86 with the intra-cluster gas.
