uncertainties concerning the value of cytoplasmic and mitochondrial ph under control conditions and during experimental pertubations , limit absolute interpretation of nad ( + ) /nadh ratios calculated from redox pairs , but the data suggest the following : ( a ) separate cytoplasmic and mitochondrial compartments for nad ( + ) and nadh exist in the alveolar macrophage ;
C0010834
cytoplasmic
C0026237
mitochondrial