Fig. 5. Representations of the networks produced by a Bayesian Network analysis of the top 40 genes selected as distinguishing ALL and AML in the microarray dataset of Golub et al. (Golub et al., 1999) for links with confidence greater than 0.7; links with confidence greater than 0.9 are shown in bold. Networks represent the consensus of 200 iterations for (A) the microarray data alone, (B) the microarray data with constraints from protein-protein interaction (PPI) data, (C) microarray data with constraints from literature networks, and (D) microarray data with constraints from a combination of microarray and PPI data.