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NK cells activity in a patient who achieved HBsAg seroconversion at 24 wk after PEG-IFN treatment. IFN-γ secretion and CD107α expression detected by flow cytometry analysis at (a) baseline, (b) the time point before HBsAg seroconversion was detected (Pre-P) and (c) the time point when seroconversion of HBsAg was detected (Post-P).
