Fig. 2
From: Safety and immunogenicity of inactivated Rift Valley Fever Smithburn viral vaccine in sheep
Monolayer of Vero cell culture on the fifth day of incubation after treatment with Rift Valley Fever virus (RVFV) Smithburn. a Non-treated cell control, b cells treated with the lowest dilution of the live RVFV Smithburn, c cells treated with the lowest dilution of the inactivated RVFV. Cytopathic effect was not observed in Vero cells infected with the lowest dilution of the inactivated RVFV. The non-treated cell culture and live RVFV were respectively used as positive and negative controls