Before revision:  We use this null model to select subnetworks which significantly deviate from random on an appropriate set of statistics and hence make suggestions as to which of the many network sampling methods might capture useful information for a real world protein-protein interaction network.
After revision:  We use this null model to select subnetworks which deviate significantly from random on an appropriate set of statistics and hence make suggestions as to which of the many network sampling methods might capture useful information for a real world protein-protein interaction network.