Human immunoglobulin combinatorial library was generated by using phage surface display expression system, and phage antibodies (Fab fragments ) to hepatitis B surface antigen (HBsAg )were screened from it.

• 应用噬菌体表面递呈表达系统构建了人抗体组合文库，并筛选出了结合乙肝表面抗原（HBsAg）的人噬菌体抗体（Fab片段）。