Mammalian liver slices incubated with [3-c14] pyruvate radioactive label in the methyl group carbon atom as well as other essential precursors will synthesize glycogen. Point out the position(s) in glucose from isolated glycogen in which you would expect to find significantly c14-labeled carbon atoms. Presume that there are no complicating reactions which rearrange the label in pyruvate before its entry into the gluconeogenesis pathway