Figure 7
From: Anti-West Nile virus activity of in vitro expanded human primary natural killer cells
NK cell supernatant pretreatment made Vero cells resistant to WNV infection. Vero cell cultures were treated with NK cell culture supernatants or control supernatants overnight prior to infection with WNV. Supernatants from testing and control Vero cell cultures were collected 10 days post WNV infection, and WNV RNA was extracted with Qiagen viral extraction kit and then analyzed with TaqMan RT-PCR. The NK cell culture supernatant was from D2NK cells.