Monolayers of Vero cells were incubated for 1 hour with medium containing 10 µM GA C15:1 or DMSO vehicle. The cells then were inoculated with a replication-defective human adenovirus type 5 (dE1/E3) containing GFP (Ad-GFP) or GFP-HSV-1 virus, at an MOI of 0.5 in a medium containing 10 µM GA C15:1 for 24 hours. Infection was evaluated by fluorescence microscopy.