Results 241 to 250 of about 3,637,465 (291)

The Transposition of Ampicillin Resistance: Nature of Ampicillin Resistant Haemophilus influenzae and Neisseria gonorrhoeae

1977
Transposable elements are discrete genetic and physical entities which can move from one replicon to another. This event occurs in recombination-deficient (recA−) bacteria where homologous recombination has been eliminated by mutation. Transposable elements include the IS insertion sequences (see P. Starlinger, this volume; H. Seadler, this volume) and
Stanly Falkow, Lynn P. Elwell, Marilyn Roberts, Fred Heffron, Ron Gill   +4 more
openaire   +1 more source

Mechanisms of Resistance to Cephalosporins in Ampicillin-resistant Escherichia Coli

Journal of Infectious Diseases, 1973
Three distinct classes of ampicillin-resistant Escherichia coli possessing different P-lactamases varied in their levels of resistance to cephalothin, cephaloridine, cephalexin, and cefazolin. The P-lactamase of class I E. coli hydrolyzed the different cephalosporins at widely different rates.
A A, Medeiros, T F, O'brien
openaire   +2 more sources

Ampicillin-resistant Haemophilus influenzae

Postgraduate Medicine, 1982
The increasing incidence of Haemophilus influenzae resistant to ampicillin has clinical implications not only for pediatricians but also for family physicians, because the bacterium is recognized more frequently as the etiologic agent for diseases in adults as well as in young children.
C, Thornsberry, L K, McDougal
openaire   +2 more sources

Ampicillin-Resistant Shigella sonnei

JAMA: The Journal of the American Medical Association, 1972
To the Editor.— The article of Ross et al (221:45, 1972) points out apparent geographic differences in the distribution of ampicillin-resistant shigellae; observed 3.7% from 1967 to 1970 in Atlanta as contrasted with his own survey, which shows an increase to 95% ampicillin resistance in 1971.
R C, Tilton, L, Corcoran, L, Newberg, A K, Sedgwick   +3 more
openaire   +3 more sources

AMPICILLIN RESISTANCE IN HÆMOPHILUS INFLUENZÆ

The Lancet, 1980
A.J Howard, C.J Hince, S.M Bell, D.E Plowman   +3 more
openaire   +4 more sources

Plasmid resistance to ampicillin in Salmonella typhi.

Bollettino dell'Istituto sieroterapico milanese, 1990
A Salmonella typhi strain resistant to ampicillin, streptomycin and sulfonamides was isolated in Catania in 1988. It has been shown that these resistances were encoded by an auto-transferable R-plasmid, of molecular weight 70 Md, belonging to the incompatibility group B.
MARRANZANO, Marina, D'Angelo M, AGODI, ANTONELLA PAOLA, Santangelo C.   +3 more
openaire   +2 more sources

RESISTANCE TYPES IN CITROBACTER FREUNDII Occurrence and Resistance to Ampicillin, Carbenicillin, Cephalothin and Mecillinam. Transfer of Ampicillin Resistance

Acta Pathologica Microbiologica Scandinavica Series B: Microbiology, 1984
The resistance types of Citrobacter freundii were investigated. The strains were divided into three groups according to susceptibility to penicillin derivatives. Group 1, comprising the ampicillin‐carbenicillin sensitive strains (A‐s/Ca‐s), constituted 22%. Group 2 (ampicillin‐resistant (A‐r)/Ca‐s) constituted 45% and group 3 (A‐r/Ca‐r) 32%.
openaire   +2 more sources

Ampicillin-resistant enterococci

Journal of Clinical Microbiology, 1990
E, Cercenado, M E, García-Leoni, P, Rodeño, M, Rodríguez-Créixems   +3 more
openaire   +2 more sources

Resistance of H. influenzae to ampicillin

The Journal of Pediatrics, 1978
R, Schwartz, W, Rodriguez, W N, Khan
openaire   +2 more sources

AMPICILLIN‐RESISTANT HAEMOPHILUS INFLUENZAE

Medical Journal of Australia, 1981
H A, Kilham, D C, Dorman
openaire   +2 more sources