The dicarboxylic acid shuttle in adipose tissue and its role in the conversion of pyruvate to glyceride-glycerol has been studied in rat epididymal fat pads in vitro. Phosphoenolpyruvate carboxykinase and pyruvate carboxylase have also been measured in rat liver and the adaptive response of these enzymes to alterations in diet has been compared to alterations of these enzymes in adipose tissue ...