Sentence examples for background level was defined from inspiring English sources

The background level was defined as the level at which low level transcription becomes indistinguishable from other background signals.

Background level was defined as the average signal of the negative and degradation controls plus two times their standard deviation.

Sample curves were plotted with logarithmic y-axis, a threshold slightly above the background level was defined, and the C t values were recorded.

In each tissue section, only granule density (the number of granules over the counted area) exceeding three times background level was defined as positive hybridization signal.

The concentration contribution from the source to the background level is defined as a 'delta concentration': Δ-Pbair.

Radioactive hot nodes on the basis of counts more than 10-fold above background level were defined as SLNs [ 11, 12].

A gene with a specific intensity (signal intensity minus local background intensity) higher than 5000 density units (cutoff level) was defined as expressed.

The significance level was defined at ≤0.05.

Their upcrossing rate across zero mean level is defined as ( nu_{0s} = sigma_{{dot{X}_{s} }} /(2pi sigma_{{X_{s} }} ) ) (s = b, r), where b and r denote background and resonant components; ( sigma_{{X_{s} }}^ ) is RMS value of the background or resonant component; ( sigma_{{dot{X}_{s} }}^ ) is RMS value of the derivative of the background or resonant component.

EGFR positivity was defined according to DAKO guidelines, any membrane staining above background level was considered positive.

No significant difference in background level was observed.