using in vivo transfection techniques specificially designed for these primary t cells in conjunction with in vitro gel retardation and dna footprinting assays , we found that activation of the il-2r alpha promoter by each of these agents involves the induction of nuclear proteins that specifically interact with a kappa b-like enhancer element ( i.e. , an element resembling the immunoglobulin kappa-chain enhancer sequence recognized by transcription factor nf-kappa b ) .
C0040648
transcription factor
C0079904
nf-kappa b