BV production of pseudotyped AcMNPVs. Sf21 cells were infected by F protein-pseudotyped AcMNPVs (Tr-6aa, Tr-16aa, Tr-19aa, Tr-29aa, Tr-40aa, and Tr-49aa) and wild-type AcMNPV. Each data point represents virion production at 48 h p.i. Data points represent means of triplicate infections and titrations, and error bars represent standard deviations from the means.