Dose response of HPBP on an AZT-resistant HIV-1 strain. PBL were infected with AZT resistant strain of HIV-1. Different concentrations of HPBP were added 24 h post infection and the HIV-1 replication was monitored 3 days post infection by quantification of the viral p24 protein. HIV-1 inhibition (grey columns) and percentage of living cell (green line) are shown relative to the mock treated conditions as 100%. The 100% level of replication correspond to an average 1.1 ng of p24 protein/ml. Values correspond to an average of at least three independent experiments performed in duplicate.