THE ACID AGGLUTINATION OF PNEUMOCOCCI
نویسندگان
چکیده
منابع مشابه
Detection of pneumococci in blood cultures by latex agglutination.
Latex agglutination by use of the Pneumoslide test on clinical blood cultures detected 22 Streptococcus pneumoniae strains as the etiological agents in 47 streptococcal septic episodes. The other 25 isolates were identified as viridans streptococci or streptococci of groups A, B, D, or G. The test demonstrated 100% sensitivity, 92% specificity, and predictive values for positive and negative re...
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چکیده ندارد.
15 صفحه اولSimple, rapid latex agglutination test for serotyping of pneumococci (Pneumotest-Latex).
The "gold standard" for epidemiological typing of Streptococcus pneumoniae (pneumococcus) is the capsular reaction test (Neufeld test) with antisera against the 90 pneumococcal polysaccharide capsules, i.e., serotyping. The method is labor intensive and requires a certain level of experience to be performed satisfactory, and thus it has been restricted for use in specialized reference or resear...
متن کاملA Note on the Production of Acid by Pneumococci
1. Actively growing pneumococci produce acid at such a rate that change in the pH of the medium parallels change in rate of growth. 2. The death of the pneumococci is not followed by change in the reaction. 3. Acidification during growth in beef infusion media proceeds until a pH of about 7 is reached. At this point growth stops. The increase in hydrogen ion concentration is not the only origin...
متن کاملMinimum number of pneumococci required for capsular antigen to be detectable by latex agglutination.
Forty-eight strains of Streptococcus pneumoniae were tested in vitro to determine the minimum number required for pneumococcal capsular antigen to be detectable by latex agglutination. It was found that 10(6) to 10(7) microorganisms per ml were needed and that antigen remained detectable even when viable pneumococci could no longer be demonstrated.
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ژورنال
عنوان ژورنال: Journal of Experimental Medicine
سال: 1914
ISSN: 1540-9538,0022-1007
DOI: 10.1084/jem.19.1.28