Figure 9: Immunohistochemical stain of VDR in human CCA specimen and the survival analysis of CCA patients based on VDR expression.

(a) The different intensities of VDR expression in human CCA specimen. (b) Kaplan–Meier plot of overall survival in CCA patients undergoing hepatectomy based on their VDR expression levels. The low VDR expression group showed poorer overall survival (P < 0.01).