Figure 1

Hierarchical clustering of 418 genes differentially expressed in macrophages in response to Staphylococcus aureus 6 hours post infection. Letters (A-F) denote the six Norwegian Red heifers tested in the study. Uninfected control samples of each individual were used as references, i.e. control and Staphylococcus aureus infected samples from one individual were hybridized to one array. Two dye-swaps (arrays) were used per individual except for individual C, where only one array was produced.