Fig. 6.
qRT-PCR confirms microarray gene expression differences. qRT-PCR was used to analyze gene expression of immune-related genes in individual kidney samples. mRNA copy number for each gene was normalized to a GAPDH control. Data represent the mean of three individual samples (± SD) for each treatment group. White bars represent control kidneys; gray bars, attenuated strain-infected kidneys and black bars, virulent strain-infected kidneys. Means were compared by Kruskal–Wallis and Mann–Whitney-U-tests. For all genes, P<0.001 for control vs. virulent and attenuated vs. virulent. For control vs. attenuated, #P<0.05 for control vs. attenuated.