<Li> Jump up ^ The interactive pathway map can be edited at WikiPathways: "TCACycle_WP78". </Li> <P> The metabolic role of lactate is well recognized, including as a fuel for tissues and tumors . In the classical Cori cycle, muscles produce lactate which is then taken up by the liver for gluconeogenesis . New studies suggest that lactate can be used as a source of carbon for the TCA cycle . </P>

Where do the krebs cycle and electron take place