Entecavir hæmmer HBV DNA- syntese (50% reduktion, EC50) ved en koncentration på 0, 004 µM i humane HepG2- celler transficeret med vild- type HBV.
Antiviral activity: entecavir inhibited HBV DNA synthesis (50% reduction, EC50) at a concentration of 0.004 µM in human HepG2 cells transfected with wild-type HBV.