Tetanus antitoxin titration by haemagglutination at a low level of test

Human tetanus antitoxin.

Tetanus Antitoxin from Intraocular Transplants **

Evidence for antibody formation by various cells, tissues, and organs has come mainly from studies employing the following methods: (i) extracts of tissue cultures,'l (ii) cannulization of afferent and efferent lymph,"'X (iii) extracts of cells, tissues, and organs,"' (iv) extirpation of the spleen," and (v) roentgen-radiation of animals with lead-protected mobilized spleens.' Although the repo...

The Destruction of Tetanus Antitoxin by Chemical Agents.

It is only to be regretted that this step was not taken earlier, for the large number of idle bulls now in the herd is both a detriment to that body and a positive loss of once good skins. This menace in the growth of the herd has been repeatedly pointed out (Clark, 1914, 1916, 1917; Osgood, Preble, and Parker, 1915) to those having the matter in charge. The last column in table 1 contains the ...

A haemagglutination and haemagglutination inhibition test for bluetongue virus.

Haemagglutination of bluetongue virus (BTV) was demonstrated for the first time by making use of a purified preparation of the virus. The reaction was found to be independent of variations in the pH, temperature, buffer system and origin of the erythrocytes used in the test. A haemagglutination inhibition test, subsequently developed, was demonstrated to be serotype specific. The storage of the...

Microtissue culture test for the titration of low concentrations of diphtheria antitoxin in minimal amounts of human sera.

A microtissue culture method for the assay of low concentrations of diphtheria antitoxin in human sera has been developed, using a monkey kidney cell (VERO) culture technique. Results obtained with sera from nonvaccinated children and with immune sera from children vaccinated with three and four injections of diphtheria pertussis tetanus vaccine were in agreement with antitoxin levels considere...