IPA network depicting relationships among genes in cluster 3, 6 hours post-infestation with P. ovis. Individual nodes represent protein functions with relationships represented by edges. Nodes coloured by gene expression, red indicating up-regulation and white indicating gene/factor not differentially expressed but with defined relationship to other genes in network. Arrows indicate directional relationships. Red circles highlight roles for MT1E, MT2A and SOD. Network score = 31.