anti-heaptitis Bsurface antibody

例句：

1. 1. The patient's blood test showeda high level of anti-Hepatitis B surface antibody.
   患者的血液检测显示抗乙型肝炎表面抗体水平很高。
2. 2. Thevaccine is designed to protect against anti-Hepatitis B surface antibody.
   这种疫苗旨在预防乙型肝炎表面抗体。
3. 3. The researchfound that the anti-HepatitisB surface antibody levels were significantly reduced inpatients with chronic hepatitis.
   研究发现，慢性肝炎患者的抗乙型肝炎表面抗体水平显著降低。