Isoproterenol ( 100mg/kg ) was injected subcutaneously on the 13th and 14th days to induce acute myocardial infarction .
B-ChemicalEntity O O O O O O O O O O O O O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O