The effect of Rg3 on phosphorylation and degradation of I-κBα. (a) The levels of I-κBα. Immunoblots show the effects of Rg3 on the levels of I-κBα in Raw264.7 cells. The data represent the mean±s.d. of three separate experiments (significant as compared to control, *P<0.05, **P<0.01). (b) The levels of phosphorylated I-κBα in cells treated with Rg3. Immunoblots show the effects of Rg3 on the levels of phosphorylated I-κBα. A representative immunoblot is shown. p-I-κBα, phosphorylated I-κBα. The data represent the mean±s.e.m. of three separate experiments (significant as compared to control, *P<0.05, **P<0.01).