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The mechanism of the coexistence of HBsAg and anti‐HBs is still unclear. This study investigated the variations located in the major hydrophilic region (MHR) of HBV from individuals with simultaneous HBsAg and anti‐HBs in Guangzhou, southern China. Among 4455 samples analyzed, 179 (4.02%) patients were discovered with both HBsAg and anti‐HBs. Finally, 44 individuals with concurrent HBsAg and anti‐HBs...
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