منابع مشابه
Studies on the Precipitin Reaction
1. Partial hydrolysis products of the specific polysaccharide of Type III pneumococcus ranging from 550 to 1,800 in formula weight can be quantitatively freed from unhydrolyzed polysaccharide. 2. The fractions yield specific precipitates with Type III antipneumococcus horse serum but fail to precipitate homologous rabbit antisera, giving rise only to specific inhibition. The aldobionic acid, th...
متن کاملA Quantitative Theory of the Precipitin Reaction
1. The reaction between crystalline horse serum albumin and homologous antibody in rabbit sera is quantitatively accounted for by expressions similar to those derived from the law of mass action for other immune precipitating systems. 2. The reaction of an azo dye prepared from crystalline serum albumin by coupling with diazotized R-salt-azo benzidine was also studied with homologous antibody a...
متن کاملThe Precipitin Reaction of Antipneumococcus Sera
The precipitin indices for a number of monovalent and polyvalent antipneumococcus sera were determined under known conditions, and found to vary as did the number of protective units. The ratio precipitin index/protective units in monovalent sera was found to lie between 2.8 and 4.8 for Type I and to be about ten times greater for Type III. Lower values were found in polyvalent horses and when ...
متن کاملPrecipitin reaction between serum and lysed erythrocytes.
The albumin fraction of all normal sera contains a factor which precipitates with part of the normal haemoglobin molecule, the reaction occurring in the proportions of 1 ml. serum to 6 to 15 mg. haemoglobin.
متن کاملQuantitative Studies on the Precipitin Reaction
1. Antisera to R-salt-azo-benzidine-azo-crystalline egg albumin give precipitates with crystalline egg albumin by virtue of their antidye content. 2. The quantitative course of the reactions with increasing amounts of antigen is very similar for the dye-antidye and egg albumin-anti-egg albumin systems, but differs markedly for the cross reaction between egg albumin and antidye. 3. A possible ex...
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ژورنال
عنوان ژورنال: JAMA: The Journal of the American Medical Association
سال: 1922
ISSN: 0098-7484
DOI: 10.1001/jama.1922.02640160048015