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Detection of ZIKV envelope protein in the presence of compound 22 using immunofluorescence staining in A549 and Vero cells. Both A549 and Vero cells were exposed to the ZIKV MR766 strain at an MOI of 0.2 and incubated with several concentrations of compound 22. Fluorescence images were acquired 72 h postinfection. (A) Cell control; (B) virus control; (C to F) 0.4 μM, 2 μM, 10 μM, and 50 μM compound 22.
