Distinct temporal regulation of transcripts encoding Rex isoforms. a Kinetics of expression of tax/rex, tax
mRNAs after transfection of HTLV-1 molecular clone ACH and b following reactivation of viral expression upon short-term culture of PBMC from the infected patient ATLL-2. X axes show the time points in hours; Y axes show the incremental variation Δt/t0 of the export ratio (a), calculated as previously described [5, 22], or of the NCN (b). Δt is the difference between the value measured at each time point and the value measured at the initial time point (t0). a Mean values and standard error bars from nine independent experiments.