THE TITRATION OF WASSERMANN REAGENTS

Complement-Fixation Technique: II. THE TITRATION OF WASSERMANN ANTIGEN.

After material has been produced for use as an antigen in a complement fixation test it is necessary to find out if the finished product has any complement-fixing ability in the presence of a serum containing a suitable antibody. Moreover, the proposed antigen must not have any undue anticomplementary property, and the " gap" between its anticomplementary titre and its complement fixing titre m...

The Use of Salicylaldehyde Phenylhydrazone as an Indicator for the Titration of Organometallic Reagents.

Concerning the Wassermann Reaction

tionally collected and kept for some time, is a very poor control. Some positive sera give a complete fixation of the usual one or more MHD of the complement in a 1 in 200 dilution; others can do so in 1 in 5 dilution only. The margin.of variation allowed for in this control, 5 to 200, is too wide to be useful in indicating whether the antigen-antibody systems involved in the reaction of comple...

Concerning the Wassermann Reaction

Sir,?In the December 1943 issue of the Indian Medical Gazette under the article on ' Concerning the ?Wassermann Reaction' I fail to see why smallpox vaccination as one of the causes producing false positive reactions has not been mentioned. Hence will you please publish the following in your valuable monthly :? False positive syphilitic reactions have been attributed to numerous causes, with sm...

Repetition of the Wassermann Reaction