Sentence examples for reversion at from inspiring English sources

The Escherichia coli WP2 tryptophan reverse mutation assay detects trp– to trp+ reversion at a site blocking a step in the biosynthesis of tryptophan prior to the formation of anthranilic acid.

The spontaneous frequency of reversion at the transgene in the transgenic line is about 4 × 10−4 and is stable over at least four generations.

The production of p n junctions and polar transistors in silicon to small scale lengths may be possible by plasma and electron beam techniques using the sub-threshold change of n-silicon into p-silicon by electron beam and its reversion at higher electron beam intensities.

Overall, there was 24% reversion at 1-month and 33% reversion at 6-months.

We show that snake mitochondrial proteins experienced unprecedented levels of positive selection, coevolution, convergence, and reversion at functionally critical residues.

Notably, the mutation K103N had a high rate of reversion at both timepoints, with a reversion rate of 62% over the duration of the STI.

By contrast antibodies to schizont extract were strongly positively associated with hepcidin concentrations regardless of age, which might be explained by their shorter half-life and high rates of sero-reversion at all ages (Ondigo et al., 2014).

Occurrence of such reversions at significant level would manifest itself as a background of native-like kinetic traces visible in flash-induced electron transfer measurements.

Subjects with persistently positive QFT-GIT results were older (median age 52 vs. 38 years, p < 0.001), had larger TST indurations (median 13 vs. 0 mm, p = 0.006), and had higher IFN-γ responses at baseline compared to subjects with reversions at follow-up (median 3.22 vs. 0.59 IU/ml, p < 0.001, Figure 3).

Overall, we observed a total of 65 substitutions (including reversions) at 54 sites across the 3 genomic segments, equivalent to ~0.004% of the sequenced genome (12,478 bp). Figure 4 summarizes all molecular changes stratified by total evolutionary time (virus generations) and selection regimes arrayed along genomic segments and annotated by putative protein function.

However, the analysis of roots length showed that every extract concentration causes a significant decrease in length in comparison to the negative control, both at 2 days followed by 3 days with water (reversion) and at 5 days (P < 0.05 and P < 0.001, resp).