原題:
[醫(yī)學(xué)微生物學(xué)]               HBsAg               抗-HBs                 

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選項(xiàng):
A.                 ﹢                  ﹣                               ﹣                     ﹣                                   ﹣
B.                   ﹣                 ﹢                              ﹣                       ﹣                                  ﹣
C.                   ﹢                    ﹣                          ﹣                        ﹢                                   ﹢ 
D.                 ﹢                     ﹣                            ﹢                    ﹢                                   ﹣ 
E.                 ﹣                       ﹢                            ﹢                    ﹣                                 ﹣