hearts excised from 20 dogs were assigned to normal coronary artery groups ( group i consisting of the hearts from 5 dogs and a perfusion solution temperature of 20 degrees c , group ii consisting of the hearts from 5 dogs and a temperature of 30 degrees c ) and blocked coronary artery groups ( group iii consisting of the hearts from 5 dogs and a temperature of 20 degrees c , group iv consisting of the hearts from 5 dogs and a temperature of 30 degrees c ) .
C0205042
coronary artery
C0018787
hearts