Activation of signaling cascades in the regenerating liver of conditional Met mutant mice. Western blot analysis of phosho-Erk1/2, total Erk1/2 protein, phospho-Akt and total Akt protein, phospho-GSK3-β, total GSK3-β protein, phospho-STAT3, and total STAT3 protein in control and conditional Met mutant liver is shown at the indicated time points after partial hepatectomy.