Levels of intracellular protein were assessed following 24 h stimulation with PMA (162 nM) or HK E. coli (5 × 107 CFU/ml). (A) Phospho-PKC increased in response to PMA and HK E. coli stimulation. (B) IκB decreased following stimulation with HK E. coli indicating NF-κB activation. (C) Bcl10 activation was inhibited following long-term stimulation with PMA, which explains the inhibitory effect of PMA on NF-κB activation. β-actin was used as a loading control. (n = 3).