Fig. 6From: Acute changes in morphology and renal vascular relaxation function after renal denervation using temperature-controlled radiofrequency catheterMicrophotographs of renal arterial fiber sections (× 200). Masson staining showing collagen fibers (blue) of arterial segments (a) without RDN and (b) with RDN. Verhoeff’s Van Gieson staining showing elastic fibers (black) of (d) untreated and (e) treated arterial segments. Comparison of collagen volume fraction (c) and elastin volume fraction (F) between the two groups. Abbreviations: RDN, renal denervationBack to article page