Figure 4From: Hepatic zonation of carbon and nitrogen fluxes derived from glutamine and ammonia transformationsTime courses of the actions of arterially infused ammonia on 14CO 2 production from [U-14C]glutamine and the corresponding oxygen uptake increments in antegrade and retrograde perfusion. Livers from fasted rats were perfused as described in Materials and Methods. [U-14C]Glutamine and ammonia were infused as indicated. Data are from 5 liver perfusion experiments and error bars are mean standard errors.Back to article page