LIU C
J Exp Med. 1961 Jan 1;113(1):111-23. doi: 10.1084/jem.113.1.111.
A factor present in fresh normal human or guinea pig serum enhances the primary atypical pneumonia (PAP) antibody titers in serological reaction with its homologous virus as tested by indirect fluorescent antibody staining. This factor is not properdin. It has many properties similar to complement but may not be identical with complement. The addition of this enhancement factor to human sera convalescent from primary atypical pneumonia has made the serological test more sensitive without affecting its specificity.
在新鲜的正常人或豚鼠血清中存在一种因子,在用间接荧光抗体染色法检测时,它能增强与其同源病毒的血清学反应中原发性非典型肺炎(PAP)抗体滴度。该因子不是备解素。它具有许多与补体相似的特性,但可能与补体并不相同。向原发性非典型肺炎康复期的人血清中添加这种增强因子,使得血清学检测更加灵敏,同时又不影响其特异性。