Fig. 4From: Defective HIV-1 envelope gene promotes the evolution of the infectious strain through recombination in vitroEnv-mediated HIV-1 infectivity. The pseudoviruses packed with Env recombinants and the parent strains NL4–3 and SG3 were generated and the infectious ability was measured by a single-cycle infection assay. RLU, relative light unit. *, p < 0.05 when compared with NL4–3. #, p < 0.05 when compared with SG3Back to article page