乙型肝炎表面抗原-这直接测试是否存在病毒。

Hepatitis B surface Antigen - this tests directly for the presence of virus.

youdao

乙型肝炎表面抗原-这直接测试是否存在病毒。

Hepatitis B surface Antigen - this tests directly for the presence of virus.

youdao