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Cytokine secreted by PBMC’s from high-responders, hypo-responders and non-responder adults after in vitro stimulation with HBsAg. A: Comparison of Th1 cytokines (IFN-γ, IL-2, TNF-α, and IL-12) between the three groups of vaccine responders; B: Comparison of Th2 cytokines (IL-10 and IL-4) between the three groups of vaccine responders. aP < 0.05.
