منابع مشابه
Molecular typing of meningococci: recommendations for target choice and nomenclature.
The diversity and dynamics of Neisseria meningitidis populations generate a requirement for high resolution, comprehensive, and portable typing schemes for meningococcal disease surveillance. Molecular approaches, specifically DNA amplification and sequencing, are the methods of choice for various reasons, including: their generic nature and portability, comprehensive coverage, and ready implem...
متن کاملChimpanzee urethral meningococci.
SIR-Reports on the isolation of Neisseria meningitidis from the cervix (Keys, Hecht, and Chow, 1971), and from the male urethra (Carpenter and Charles, 1942; Volk and Kraus, 1973; Holmes, 1972; Wende, 1972) raise questions as to the source of the meningococci and their isolation from the genital tract. We have recently recorded an observation relating to this subject in chimpanzees. Our laborat...
متن کاملSerotypes of group B meningococci.
Strains of group B meningococci isolated from cases of sporadic infection, epidemic infection, and from patients unassociated with clinical meningococcal infection have been examined by a serological typing technique. The majority of group B meningococci from clinical infections in the UK have serotype 2 antigen. Such strains were relatively uncommon among carriers who had no association with m...
متن کاملTransformation of Type Specificity of Meningococci
Heritable type-specific traits have been induced in meningococcus populations by exposure to desoxyribonucleic acid (DNA)-containing extracts derived from meningococcus cells of the type desired. The DNA has been shown to be an essential component of the transforming extract. As in the H. influenzae system, the reaction between the susceptible cell and the DNA responsible for the heritable chan...
متن کاملStudy of the Classification of Meningococci
The meningococcus, like some other pathogenic species, varies in its agglutination in immune serum, some strains being readily agglutinable while others agglutinate with difficulty in their homologous serum as well as in heterologous serums. The different strains appear to vary also in their action as antigens. In order to secure representative strains, therefore, it was thought necessary to co...
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ژورنال
عنوان ژورنال: American Journal of Public Health and the Nations Health
سال: 1945
ISSN: 0002-9572
DOI: 10.2105/ajph.35.3.233