A Biologic Classification of Hemolytic Streptococci
نویسندگان
چکیده
منابع مشابه
The Classification of Hemolytic Streptococci
1. The hemolytic variety of streptococcus is homogeneous, consisting of members that are nearly identical. 2. This homogeneity is most strikingly displayed in the behavior of these streptococci in the complement fixation reaction, all the strains studied reacting in a nearly identical way with all the antisera.
متن کاملA Classification of Non-hemolytic Streptococci
1. No connection can be demonstrated between grouping of non-hemolytic streptococci based upon fermentation reactions, and grouping based upon immunological reactions. 2. A classification of non-hemolytic streptococci can be effected by studying the complement fixation reactions between the streptococci and their antisera. 3. The arrangement of the streptococci in such a classification depends ...
متن کاملA Classification of Non-hemolytic Streptococci. by Ralph
No group of bacteria has been suspected of etiologic relationship with so many and diversified disease processes as the streptococcus. At the same time there is no group which suffers more confusion hi the relationship of its numerous members. The purpose of the present work was t o at tempt a classification of twenty-eight strains of non-hemolytic streptococci by a comparative study of their b...
متن کاملTyping Group a Hemolytic Streptococci
Two methods of typing group A hemolytic streptococci have been described: slide agglutination and anti-M precipitin tests. The first, developed by Griffith (1), is more extensively used. I t has the distinct advantages of requiring small amounts of serum and culture, and of a quick reaction time when all conditions are favorable. I t has certain disadvantages: The granular growth of some strain...
متن کاملStudies upon Minute Hemolytic Streptococci
1. Minute beta hemolytic streptococci were found to occur from one-third to one-half as frequently in normal individuals as do ordinary beta hemolytic streptococci. 2. They were rarely isolated from the rhinopharynges of individuals suffering from chronic disease. 3. In acute respiratory tract infection other than that due to the ordinary beta hemolytic streptococcus the incidence of minute str...
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ژورنال
عنوان ژورنال: Journal of Infectious Diseases
سال: 1919
ISSN: 0022-1899,1537-6613
DOI: 10.1093/infdis/25.4.315