The transition of the J94356_PBMC expressing HV_MNE cell lines to IL-2 independence is associated with STAT5 activation and HV_MNE expression. J94356_PBMC cells hybridized with EBER RNA (A) or incubated with hybridization buffer in the absence of probe (B). (C) EMSA on control PBMC (lanes 1 through 4) and the J94356_PBMCcell line in the IL-2–dependent (lanes 5 through 8) and IL-2–independent (lanes 9 through 12) status.