CD4 and deltaretrovirus infections: Consistentwith data obtained on HTLV-2 ex vivo samples[57], we have also shown that ADAR1expression is higher in HTLV-1 and HTLV-2 chronically infected lymphocytes comparedto non-infected T-cells and in primary CD4+ T-cellsobtained from HTLV-1 infected individuals, thus suggesting that ADAR1 is expressedin response to HTLV infection.