in experiments with rat-liver mitochondria incubated under state-4 conditions , it was found that the extramitochondrial atp/adp ratio , as calculated from the values measured in neutralised perchloric acid extracts , was lower than that estimated from the concentrations of creatine and creatine phosphate , using the metabolite indicator method .
C0010286
creatine
C0031634
creatine phosphate