Figure 4From: In vitro inhibition of monkeypox virus production and spread by Interferon-βLow MOI growth curve. HeLa cells were either left untreated or were pre-treated for 24 h with 2000 U/ml of IFN-β. After pre-treatment, the cells were infected with MPXV- Zaire at an MOI = 0.01 in the presence or absence of 2000 U/ml of IFN-β. Cells (a) and medium (b) were separately harvested at the indicated times, and lysates were titered by plaque assay. Note the different scales in (a) and (b).Back to article page