tungsten-treated isolated perfusion hearts ( langendorff , ventricular balloon , 37 degrees c ) had negligible xanthine oxidase activity ( less than 0.3 vs greater than 8.0 u/gm myocardium ) and improved recovery of developed pressure ( dp ) , contractility ( +dp/dt ) , and compliance ( -dp/dt ) after 20 minutes of global ischemia ( 37 degrees c ) and 40 minutes of reperfusion .
C0018787
hearts
C0027061
myocardium