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Time-course anti-HBV activities of A. mellifera (AM) n-butanol and aqueous fractions (125 μg/mL each). ELISA showing inhibitions of (a) HBsAg expression and (b) HBeAg expression in HepG2.2.15 culture supernatants at days 1, 3, and 5. Lamivudine (2.0 μM) used as reference anti-HBV drug. Values (y-axis): means of 3 determinations.
