Importantly, although the system designed in this work for P. aeruginosa lacks the benefit of selection, it shares the advantage of other chromosomal forward systems used in other bacterial species for the detection of broad mutational spectra [41], [42] over reversion systems, in which the number of sites and kinds of mutations that can produce the revertant phenotype are quite limited [43] [48].
At the genotypic level, a strong historical contingency was found, likely explained by the preponderance of compensatory evolution over reversion, whereas a weak effect of historical contingencies on the phenotypic evolution was revealed.
Since we have used a construct designed for single cross-over integration, reversion of the disrupted locus to wild type can occur at low frequency in the parasite population as has been reported for P. berghei TRAP mutants [37].
The concern over potential reversion of live-attenuated vaccine to virulence, has made chemically-inactivated virion-based vaccines a more attractive choice for EV71 vaccine development.
The lack of reversion over-time of pre-existing viral adaptations in subjects without the relevant HLA type suggest that these changes may require compensatory mutations that do not allow simple reversion, therefore allowing the accumulation of mutations and transmission of pre-adapted viruses.
Virus hopped the mountains, got to the sea,S Vaccine brought in and given out free, Virus kept movin', had to go, All the way from here to Mexico.T Cause everybody said, "Gotta stop that bug, Gotta use the vaccine because there ain't no drug," Beltsville brethren said "Gotta wait," Afraid that the vaccine was MF-8.U Voice-over: That means reversion to virulence.
More recently, different rates of test conversion and reversion over time have been noted [ 30, 31].
After controlling for potential confounders, adherence to AHEI was associated with increased odds of MetS reversion over the 5-year follow-up (Table 1).
The Nottinghamshire innings, assumed to be the last one of 40 overs duration at a Lord's final since there is the logical reversion to 50 overs next year, spluttered along until the veterans, David Hussey and Read, came together to add 99 in 16 overs.
Post irradiation, on SDS PAGE, the monomeric form of Alr4641 disappeared and only the dimeric form could be seen after 24 h, indicating the reversion of the over-oxidised Alr4641protein to its normal form.
One way, using volatility, is to look for historical and implied volatility to both begin turning over on daily charts (remember mean reversion).
