Bean plot analysis of relative FN1 mRNA expression in normal renal tissue, oncocytoma and RCC. Bean plots represent an alternative to boxplots. The individual observations are shown as small lines in a one-dimensional scatter plot, the estimated density of the distributions is visible and the average is shown. Mean tissue specific FN1 mRNA expression was increased approx. 7 fold in RCC compared to corresponding normal renal tissue (p < 0.001) and oncocytoma (p = 0.016). There was no significant difference in FN1 expression between normal renal tissue and oncocytoma. Abbreviations: FN1RQ = Relative quantity of FN1 mRNA expression analysis using RPTEC primary cells as a biological calibrator; normal = normal renal tissue; Oncocyt = oncocytoma.