we also examined diffusion characteristics of the parietal pericardial membrane and found that the rate constant of adenosine diffusion for this and the visceral pericardium are of the same order of magnitude , indicating that the extensively used standard pericardial superperfusate method probably underestimates cardiac interstitial adenosine concentration by 50 % or more .
C0225968
visceral pericardium
C0018787
cardiac