Fig. 2From: In vitro antiviral activity against rotavirus and astrovirus infection exerted by substances obtained from Achyrocline bogotensis (Kunth) DC. (Compositae)Evaluation of the virucidal effect exerted by F1 fraction from Achyrocline bogotensis (Kunth) DC. (Compositae) on (a) rotavirus (RRV strain/MOI = 5) and (b) astrovirus (Yuc8 strain/MOI = 2). Viruses were first co-incubated with several nontoxic concentrations of F1 during 1 h at 37 °C, and then mixtures were placed on Ma104 and Caco2 cells, respectively. At 10 or 12 hpi intracellular virions were immunodetected in order to find a decrease of the infectivity. Viruses co-incubated with the corresponding concentrations of the solvent of F1 (DMSO), were used as controls. The pictures were taken with a 10X objective in an Olympus CKX41 microscopeBack to article page