Fig. 6.

TNF-α receptor-mediated signaling is essential to myogenic gene expression. Primary myoblasts from 3- to 4-day-old WT or p55^−/−p75^−/− (KO) mice were prepared, differentiated, and collected at 48 h of differentiation. MHC expression was determined by Western blot analysis and normalized to β-actin. A representative blot derived from 2 independent experiments is shown. Data were expressed and analyzed as described in Fig. 5.