Fig. 5
From: Identification of the natural product berberine as an antiviral drug
The inhibitory effects of berberine on HIV-1 Env-mediated cell–cell fusion. a Inhibition of berberine on HIV-1 Env-mediated syncytium formation. T20 was used as the positive control. b Inhibition activity of berberine on HIV-1 infection. Target cells were infected with the HIV-1 virus in the presence or absence of berberine. PBS was used as the negative control