ARG1 deletion prevents Ang II-induced coronary arterial fibrosis.

<p>Representative Sirius Red stained heart sections from WT and ARG1^<b>+/−</b> (A1KO) mice given infusions of Ang II or saline (Sham). Collagen was quantified as its area as a percentage of the vessel surface area. Values are expressed as mean+/-SEM, n = 4–6, *P < 0.05 and **P < 0.01 vs. all other groups. Size bars represent 50 μm.