muscles sampled from a vascularly isolated autoperfused dog gracilis by fast freezing techniques at 5 , 10 , 15 , 30 , 60 , and 180 s after the initiation of twitch contractions at 4 hz were analyzed for phosphocreatine , creatine , atp , lactate , pyruvate , 3-phosphoglycerate , and dihydroxyacetonephosphate contents .
C0031634
phosphocreatine
C0010286
creatine