this enhancer is active on both a tcr v alpha ( variable region alpha chain ) promoter and the minimal simian virus 40 promotor in tcr alpha/beta jurkat and el4 cells but is inactive on a v alpha promoter in human tcr gamma/delta peer and molt-13 cells , clone 13 b cells , and hela fibroblasts .
C0007634
cells
C0016030
fibroblasts