HIV-1-specific CD4+ T-cell responses are not associated with significant viral epitope variation in persons with persistent plasma viremia.
Koeppe JR, Campbell TB, Rapaport EL, Wilson CC. HIV-1-specific CD4+ T-cell responses are not associated with significant viral epitope variation in persons with persistent plasma viremia. J Acquir Immune Defic Syndr. 2006 Feb 01; 41(2):140-8.