tokens: We include a redox-regulatory mechanism ( s ) in this common pathway to account for the previously demonstrated redox regulation of NF-kappa B activation in Jurkat cells ( in which oxidants do n't activate NF-kappa B ) ; we put tyrosine phosphorylation in the common pathway by showing that kinase activity ( inhibitable by herbimycin A and tyrphostin 47 ) is required for NF-kappa B activation by all stimuli tested in both cell lines .