Figure 3.Correlation of mRNA with protein expression by immunohistochemistry. Messenger RNA expression levels for three genes, SFRP1, keratin 19, and S100P have been taken from figure 1 together with the figure 1 sample dendrogram. Immunohistochemical stains for each of these genes are shown below the mRNA data. For each stain, the left panel shows a full thickness section of a normal renal lobe. The right panel shows a high power image taken from the area with the most intense staining. In each case, mRNA expression data correlates with the distribution of the cognate protein by immunohistochemistry.