Fig. 4From: Sphingosine kinase 1 expression enhances colon tumor growthWilcoxon matched-pairs signed rank test between cancer and adjacent normal tissues. Tissue microarray containing colon cancer tissues and matched adjacent normal tissues from 90 colon adenocarcinoma patients are stained for SphK1 and COX-2. Staining was scored based on the intensity (0–3) and proportion (0–3) and the each score was used for the analysis. The differences between cancer tissues and adjacent normal tissues were calculated and analyzed by Wilcoxon matched-pairs signed rank test. a SphK1 intensity, and b COX-2 proportionBack to article page