Hep3B cells were seeded in six-well plates and cultured under standard growth conditions for 24 h. After the cells reached 60–70% confluence, the culture medium was removed, and the cells were mock infected or infected with DENV 2 for 2 h, after which the virus inoculum was removed and various concentration of metformin (Merck Group, Darmstadt, Germany) were added into the cells in normal growth medium and cells were then further incubated under standard conditions for 24 h. All experiments were undertaken as three independent biological three replicates.
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