Phase variation

Phase variation is an immune evasion technique employed by various types of bacteria, including Salmonella species. It involves the switching of surface antigens, to evade specific adaptive immune system responses.
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Identification of mutants with increased phase variation frequencies. Mapping and analysis of loci involved in phase variation modulation. REFERENCES ...
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... took place during phase variation of 4BrecA. ... Phase variation is one adaptive process by which bacteria ... control phase variation. ...
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Colony morphology and phase variation correlates with the presence of pili on ... For these strains, phase variation can be achieved by spontaneous mutations in ...
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This phenomenon has been labeled phase variation, but it probably does not ... Restriction analysis of phase variation in Xenorhabdus spp. ...
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Phase variation is a mechanism of ON–OFF switching that is widely utilized by ... These are central features of phase variation but are rarely addressed, with the ...
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dam+/drg and dam/drg+, did not modify phase variation frequencies. ... The frequency of phase variation is a major factor controlling the genetic ...
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During mid-puberty, phase variation is large and explains up to 40 percent of ... Michael Hermanussen (2007) "Phase Variation in Child and Adolescent Growth, ...
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Phase variation can also influence the affinity of pathogens for different host ... The genetic mechanism of phase variation in many cases is expansion and ...
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Consortium Publishes Phase II Map of Human Genetic Variation ... Variation in the human genome is organized into local neighborhoods called ...
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... efficiently, you can measure the phase noise in your signal ... e(t)= amplitude variation of signal and. Δj(t)= phase variation, or phase noise, of signal. ...
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The difference in the phase of the annual variation is, however, large enough to ... Thus, the phase of the semiannual variation predicted by this model is not ...
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During phase variation, the pilin gene is turned on and off at high frequencies. ... We have examined phase variation in more detail, and we report that in most P ...
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Phase variation of H. influenzae fimbriae: Transcriptional control of two ... is subject to reversible phase variation between three expression levels. ...
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Providing a microscope apparatus capable of observing phase variation of a phase object with sufficient contrast with a white light source having an area such as a ...
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We notice that the mean phase variation can be observed as a spectral shift f0 ... Estimating of the variance of the dynamic phase variation ...
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... at many frequencies, so its phase with respect to the main ... Random phase variation. due to noise pk-pk. Random amplitude variation. due to noise pk-pk ...
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Abstract – The phase variation from a 300-m baseline 11.2 GHz interferometer was ... In Figure 5 we have the phase variation seen by the interferometer and the ...
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