Figure 2From: Hepatitis B virus infection and replication in human bone marrow mesenchymal stem cellsAnalysis of HBV DNA by FQ-PCR. (A) Intracellular HBV DNA was extracted from infected human BMSCs at various times and not detected until 2 days. (B) Extracellular HBV DNA was extracted from cell supernatants at various times and not detected until 3 days. No HBV DNA was detected in the cells or supernatants at time zero (data not shown).Back to article page