CGA and infection: Here, given the observed discrepancy with regard to presence of consensus ISRE and GAS elements in the promoters of L lineage genes (such as LFA and LHA (15),) that, to date, do not show marked transcriptional induction in response to either SAV3 infection, type I or type II IFN stimulation it is not unlikely that suppressive and/or additional regulatory elements are involved in controlling transcription of these genes.