prozone
/ˈprəʊzəʊn/noun
mass noun
- Immunology (in testing for antigens) the range of relative quantities of precipitin (or agglutinin) and antigen within which any precipitation (or agglutination) is inhibited by the predominance of one component【免疫】前带, 前区。
词源
early 20th cent.: from PRO-2 before+（agglutination） zone.