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COBAS Amplicor HBV Monitor assay linearity. Eight samples were serially diluted in HBV-seronegative NHS and tested by the Amplicor assay in triplicate on the same day. The means of triplicate values were calculated and plotted as log HBV DNA copies/milliliter. The equation of the linear regression (solid line) is as follows: Observed = 1.073(Expected) − 0.247; R2 = 0.993, n = 32. The dashed line represents identity.
