A passive haemagglutination test using sheep erythrocytes sensitised with Treponema pallidum extract was introduced into syphilis serology by Rathlev (1965, 1967). Shortly afterwards, Tomizawa and Kasamatsu (1966) and Tomizawa, Kasamatsu, and Yamaya (1969) described a similar test, the Treponema pallidum haemagglutination assay (TPHA), and this was further developed as an automated quantitative...

In 1975 and 1976, 7580 serum specimens were tested for HBsAg by the passive haemagglutination test, Hepanosticon. Serum from 38 people gave a positive result after absorption with the absorbent provided, but the presence of HBsAg could not be confirmed by other tests. Tests for current infection with EB virus, namely, the presence of heterophil antibody and EB virus specific IgM, were performed...

Materials and methods A total of 270 patients attending the STD clinic of JIPMER, Pondicherry, India, were randomly included in the study irrespective of age and sex. A detailed examination was done to rule out any underlying STD. All the patients were screened for syphilis (VDRL), HIV infection (enzyme immunoassay for detection of antibodies to HIV-1, HIV-1 group 0 and HIV-2), HBV infection (r...

In a comparison of the reverse passive haemagglutination test (RPHA) with the direct immunofluorescent and rapid carbohydrate utilisation tests for the identification of Neisseria gonorrhoeae isolated from clinical specimens, 315 isolates of oxidase-positive Gram-negative diplococci were tested as pure 24-hour-old subcultures and samples from 108 similar organisms were taken directly from prima...

Summi~ ry An ELlSA (enzyme-linked immunosorbent assay) method for detecting HB,Ag was compared with the RPHA (reverse passive haemagglutination) method. A total of 90 specimens were tested and i t was found that the ELlSA method was equal in sensitivity to the RPHA method; 45 out of 90 samples were positive by both ELlSA and RPHA and 42 out of 90 negative. In addition, 3 samples weakly positive...

Active and passive protection studies in mice using sheep antisera revealed that the immunological relationship among Pasteurella multocida Type A strains could not be correlated with their serological relationship as determined by a haemagglutination or an agglutination test. Furthermore, strains possessing similar phenol extractable antigens or heat stable antigens did not provide complete cr...

The occurrence of deoxyribonucleic acid (DNA) antibodies in the sera of patients with systemic lupus erythematosus (SLE) has been established by several authors by different techniques. Their diagnostic value has been studied in more extensive series of patients by Jokinen and Makitalo (1960: passive haemagglutination and complement-fixation), Kayhoe, Nasou, and Bozicevich (1960: bentonite floc...