The Present study demonstrates the diagnostic characteristics of Pedilanthus tithymoloides, agglutinin (PTA), lectin based hemagglutination method for screening of thyroid disorders as compared with RIA as gold standard. The result estimates 90% sensitivity, 95.55% specificity and 92.63% observed agreement with RIA test in thyroid disorders. The result of hyperthyroidism, hypothyroidism and cre...

The diagnostic value of the hemagglutination inhibition test for Newcastle disease has been established for some years (Brandly et al., 1946). The question of the relationship of the hemagglutination inhibition activity (HI) of immune sera to virus-neutralizing activity (SN) or to the refractivity of the host to challenge infection is still one of both fundamental and practical importance. Data...

A number of investigators have attempted to utilize the hemagglutination system for detection of streptococcal type-specific antibody in human sera. Cross-reactions have made the procedure unreliable without cumbersome and time-consuming manipulation of the test sera. A method is described in which a microtiter indirect hemagglutination technique, using sensitized sheep erythrocytes, is sensiti...

Duck beak atrophy and dwarfism syndrome (BADS) is a newly emerged disease in China since 2015. In October 2017, an unidentified disease occurred in Cherry Valley ducks, Chongqing municipality, the southwest of China. The affected birds showed short beak and growth retardation clinical signs. The disease caused approximately 20.00% morbidity and serious weight loss due to retarded growth. In ord...

Modification of the pH of kaolin-serum treatment produces hemagglutination-inhibition test results comparable with the plaque neutralization test in duck embryo tissue culture; the standard treatment does not.

Dengue viruses were isolated in a mosquito cell clone, C6/36, and their serotypes were identified by the immune adherence hemagglutination (IAHA) test. Even when viruses were not cytopathogenic, the IAHA test detected virus growth in the cells.

An indirect hemagglutination test for the diagnosis of leptospirosis is described; the test uses a soluble antigen from serotype patoc to sensitize sheep erythrocytes which are then fixed with glutaraldehyde. Evaluation of this procedure indicates that it is more reliable than the conventional macroscopic agglutination test and, in contrast with both microscopic and macroscopic agglutination te...

A passive hemagglutination (PHA) test for measles was evaluated in comparison with hemagglutination inhibition (HI) and neutralization (NT) tests. The PHA test determines exclusively the level of antibody directed to the hemagglutinin protein of measles virus. The ratio of PHA to HI titer was 1 to 32 (geometric mean, 6.5) for the first 5 weeks of infection but declined to near unity thereafter....

Rantz and associates (1952, 1956) discovered an unusual antigen which is present in many species of gram-positive and absent in gramnegative bacteria, and referred to it as "nonspecies specific (NSS) antigen." This antigen becomes readily attached to erythrocytes and thus renders the latter specifically agglutinable by antibodies directed against it. Sheep red blood cells modified by Rantz anti...

A rapid, simple, and accurate counterimmunoelectrophoresis (CIE) technique was developed and compared with the indirect hemagglutination and rapid plate agglutination techniques for serotyping cultures of Pasteurella haemolytica. The CIE test had 100% correlation with the conventional indirect hemagglutination test and, after serum absorption, correctly identified cultures representing the 12 e...