Total CD4+ T cells were isolated from PBMCs (Stem Cell) and cultured (3–6 replicates of 1 million cells/well) in phenol red–free R10 media with or without phorbol 12-myristate 13-acetate (PMA)/ionomycin (Iono) for 7 days in the presence of 300 mM of efavirenz and raltegravir as previously described [21 (link)]. Total induced HIV-1 RNA was quantified in culture supernatants (pooled from replicate wells and tested in duplicate) by qPCR at pre-entry, week 6, and week 12.