Results 11 to 20 of about 39,604 (271)
Studies on Lysogeny in Staphylococci [PDF]
SUMMARY: A staphylococcus typing phage (NCTC 8426) was found to form lysogenic systems with three strains of staphylococci. In the case of two of these strains, staphylococci lysogenically infected with the typing phage were now lysed by the temperate phages they had previously carried. This loss of immunity was due to the replacement of the originally
R. H. Gorrill
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Fixed points and limit cycles in the population dynamics of lysogenic viruses and their hosts [PDF]
Starting with stochastic rate equations for the fundamental interactions between microbes and their viruses, we derive a mean field theory for the population dynamics of microbe-virus systems, including the effects of lysogeny. In the absence of lysogeny,
A. Kolmogorov+7 more
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Giant number fluctuations in microbial ecologies [PDF]
Statistical fluctuations in population sizes of microbes may be quite large depending on the nature of their underlying stochastic dynamics. For example, the variance of the population size of a microbe undergoing a pure birth process with unlimited ...
Das, Dibyendu+2 more
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Studies on Escherichia coli HflKC suggest the presence of an unidentified λ factor that influences the lysis-lysogeny switch [PDF]
Background The lysis-lysogeny decision in the temperate coliphage λ is influenced by a number of phage proteins (CII and CIII) as well as host factors, viz. Escherichia coli HflB, HflKC and HflD.
Bandyopadhyay, Kaustav+3 more
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Typing of Nontypable Staphylococci by Lysogeny [PDF]
Strains of coagulase-positive staphylococci which were nontypable with the routine typing set of phages could be typed by lysogeny with phage-propagating strains as indicators and with ultraviolet induction. About 10% of the strains could be typed without induction.
Sak Duk Choi+3 more
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Lysogeny in Leuconostoc oenos [PDF]
Thirty strains of Leuconostoc oenos were exposed to mitomycin C to induce lysogenic bacteriophages. Lysis curves typical for lysogenic strains were obtained with 19 strains. Indicator strans were found for 17 of these phages. Five were characterized by electron microscopy, lytic spectrum, molecular masses of the proteins, sequencing of five N-terminal ...
Elke K. Arendt+2 more
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Effect of Lysogeny on Serum Sensitivity [PDF]
WhenEscherichia coliK-12 was infected with λ phage and mutants of λ characterized by the production of temperature-sensitive repressors, the lysogenic bacteria were significantly more resistant to normal serum than the uninfected organisms. Infection ofE.
Lissa A. Ahl+5 more
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Lysogeny In Coagulase-Negative Staphylococci [PDF]
Summary Lysogenicity in coagulase-negative staphylococci was tested by incubating the strains in the presence of Mitomycin C. Among 173 strains examined, 45 were found to release phage. Twenty-eight of these phages were obtained from 90 strains belonging to Staphylococcus epidermidis biotype 1 (Baird-Parker, 1965).
C. P. A. van Boven+2 more
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Boolean Models of Bistable Biological Systems [PDF]
This paper presents an algorithm for approximating certain types of dynamical systems given by a system of ordinary delay differential equations by a Boolean network model.
A. Novick+16 more
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