Hypertension and Cardiovascular Remodelling in Rats Exposed to Continuous Light: Protection by ACE-Inhibition and Melatonin

Figure 7

The influence of captopril (24C) and melatonin (24M) on the concentration of collagen in the aortic media in 24 hours/day continuous light exposure-induced hypertension (24). Specimens are stained with picrosirius red and evaluated in polarized light: red to yellow color represents collagen I and green color represents collagen III. c: Wistar controls (according to [36] with permission).