Visualization of the differentially expressed genes of the DE-group. The (e), (t), and (e + t) categories show large overlap between the categories. The lists of genes were grouped in (1) DE: the Number of Differentially Expressed genes (i.e. in the experiments and in the meta-analysis), and (2) IDD (Integration Driven Discoveries): the number of genes that were determined differentially expressed in the meta-analysis that were not identified in any of the individual studies alone (i.e. new differentially expressed genes). These two groups were studied in detail in five categories each: (e): experiment - i.e. 4 studies, (t): time after infection – 14 different time point post-infection, (et): overlap between the (e) and (t) groups, (e-t): genes unique in (e), and (t-e): genes unique in (t).