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Digital photographs of 2mm myocardial slices from rats injected iv with 111 MBq of [99mTc(CO)3-1]3+ (A) or with 99mTc-HYNIC-1 (C). Normal myocardium is colored with Evans blue (blue-grey zones); the area at risk is pink-red. Corresponding autoradiograms with [99mTc(CO)3-1]3+ (B) or 99mTc-HYNIC-1 (D) uptake matching the area at risk.
