reagin
/riːˈeɪdʒɪn/noun
mass noun
1- Immunology the antibody which is involved in allergic reactions, causing the release of histamine when it combines with antigen in tissue, and capable of producing sensitivity to the antigen when introduced into the skin of a normal individual【免疫】反应素; 反应抗体。
1.1
- the substance in the blood which is responsible for a positive response to the Wassermann test梅毒反应素。
派生词
reaginic
adjective词源
early 20th cent.: coined in German from reagieren 'react'.