GLUT4, AMP kinase, but not the insulin receptor, are required for hepatoportal glucose sensor-stimulated muscle glucose utilization. - Burcelin, Remy; Crivelli, Valerie; Perrin, Christophe; Da Costa, Anabela; Mu, James; Kahn, Barbara B.; Birnbaum, Morris J.; Kahn, C. Ronald; Vollenweider, Peter; Thorens, Bernard (Journal of Clinical Investigation, 2003)