منابع مشابه
Antigenic Streptococcal Hemolysin
1. Normal serum, used in cultures for preparation of the streptolysin, modifies the properties of the streptolysin, causing delayed hemolysis, increased filterability, resistance to oxidation or reduction, and absence of antigenicity. 1. Streptolysin prepared without serum is an active antigen. 3. Similar temperatures are required to destroy the antigenic activity of serum-free streptolysin and...
متن کاملBacteriocin (hemolysin) of Streptococcus zymogenes.
The sensitivity of Streptococcus faecalis (ATTC 8043) to S. zymogenes X-14 bacteriocin depends greatly on its physiological age. Sensitivity decreases from the mid-log phase on and is completely lost in the stationary phase. The sensitivity of erythrocytes to the hemolytic capacity of the bacteriocin showed considerable species variation. The order of increasing sensitivity was goose < sheep < ...
متن کاملMicrotitration of Bacillus cereus hemolysin.
A microtiter procedure for the quantitation of Bacillus cereus hemolysin is described.
متن کاملThe Precise Measurement of Hemolysin
The content in hemolysin of a solution is commonly measured as the amount which is just sufficient to produce complete hemolysis of an arbitrary quantity of red blood cells, usually 0.5 cc. of a 5 per cent suspension of washed erythrocytes. The method employed for such measurement gives results which are neither exactly comparable in determinations made at different times, nor highly precise. T...
متن کاملThe Precise Measurement of Hemolysin
A method is described for the measurement of hemolysin concentration, which makes possible exact comparison of results obtained at different times and with different specimens of erythrocytes and alexin; and gives precise values with an error not greater than 2 per cent.
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ژورنال
عنوان ژورنال: Nature Biotechnology
سال: 1999
ISSN: 1087-0156,1546-1696
DOI: 10.1038/9799