large transmural myocardial infarctions were produced by ligation of the left anterior descending coronary artery ( major ligation ; diameter of infarction above 4.0 cm ) , and small subendocardial or intramural infarctions were produced by ligating a small diagonal branch of the left anterior descending coronary artery ( minor ligation ; diameter of infarction less than 1.5 cm ) .
C0027051
myocardial
C0021308
infarction