adenosine triphosphate ( atp ) levels , total adenine nucleotide content ( sigma ad ) , and creatine phosphate ( cp ) content were significantly higher ( p less than 0.005 ) in the subepicardium than the subendocardium in regions of the heart distal to major occlusions : 35.36 +/- 2.12 nmole/mg versus 28.7 +/- 1.7 ( atp ) , 42.24 +/- 2.04 versus 35.6 +/- 1.6 ( sigma ad ) , and 29.99 +/- 4.32 +/- versus 16.35 +/- 3.48 ( cp ) .
C0001413
adenine nucleotide
C0001480
atp