THE CONVERSION OF HEMOLYTIC STREPTOCOCCI TO NON-HEMOLYTIC FORMS
نویسندگان
چکیده
منابع مشابه
The Conversion of Hemolytic Streptococci to Non-hemolytic Forms
From one strain of hemolytic streptococcus three forms were isolated, which produced three different degrees of hemolysis on the surface of blood agar in the presence of oxygen. The original form was moderately hemolytic; the glossy variant was more hemolytic than the original form; and the third form, obtained by passing the original culture through mice, was non-hemolytic. Under anaerobic con...
متن کاملReactions of Rabbits to Non-hemolytic Streptococci
1. Accompanying and following the evolution of a secondary reaction in the skin of rabbits after inoculation with suitable doses of certain non-hemolytic streptococci there quickly develops a general state of hypersensitiveness or allergy towards these streptococci. 2. This state is made evident by ophthalmic reactions following corneal inoculations, by much increased reactivity of the skin fol...
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 کاملThe Skin Response of Rabbits to Non-hemolytic Streptococci
An attempt has been made to interpret on the lines of the Arthus phenomenon the secondary reaction which follows the intradermal inoculation of certain non-hemolytic streptococci into rabbits; but evidence in support of this interpretation of the reaction has not been obtained. The facts make it seem probable that if this secondary reaction is due to a hypersensitive state it must be one more c...
متن کاملNon-hemolytic Streptococci and Acute Rheumatic Fever
1. Blood cultures from 25 cases of acute rheumatic fever were negative for non-hemolytic streptococci of both the alpha and gamma types. 2. Non-hemolytic (gamma type) streptococci were frequently recovered from the throats of patients with this disease. 3. Similar organisms were recovered just as frequently from the throats of normal individuals. 4. Although these non-hemolytic streptococci wer...
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ژورنال
عنوان ژورنال: Journal of Experimental Medicine
سال: 1928
ISSN: 1540-9538,0022-1007
DOI: 10.1084/jem.48.4.493