Figure 10: Inhibition of HIV reverse transcriptase (RT) by P. hysterophorus leaf extracts. The extracts were prepared in HX, BZ, CH, EA, AC, ET, and AQ as described in Section 2. Anti-HIV-RT activity was measured at two concentrations of extracts, namely, and . Nevirapine was used as standard anti HIV-RT agent for comparison producing about 99% inhibition of HIV-RT under similar conditions. The data are expressed as mean ± SD of three replicates ( ).