这种病毒的变化就是因为我们所说的抗原漂移或是抗原更换。
The virus is really changing because of what we call antigenic drift and shift.
这很重要，因为病毒抗原是以前被忽略。
This is very important because the virus antigen was previously being ignored.
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.
乙肝表面抗原的外表面的病毒。
Hepatitis B surface antigen is the outer surface of the virus.
每一间教会都会偶尔染上病毒，管教就是神的抗原体。
Every church gets a virus now and then. Discipline is God's antibody.
目的建立乙肝病毒表面抗原的人参细胞表达系统。
Objective To construct an expression system of HBsAg in ginseng cells.
目的建立乙肝病毒表面抗原的人参细胞表达系统。
Objective To construct an expression system of HBsAg in ginseng cells.
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