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(A) Experimental protocol. LAD: left anterior descending artery; LLLI: Low-level laser irradiation; VEGF: vascular endothelial growth factor; GRP78: glucose-regulated protein 78; SOD: superoxide dismutase; MDA: malondialdehyde; LVEF: left ventricular ejection fraction; LVFS: left ventricular fractional shortening. (B) Illustration of LLLI precondition for the infarcted myocardium.
