Sentence examples for background level were identified from inspiring English sources
Levels of radioactivity three times the normal background level were identified close to where local government records suggest the waste was dumped, in a cesspit which had served a row of now demolished terrace houses on Temple Mill Lane.
Genes whose intensities were less than the median plus two standard deviations of the background level were identified as null.
Genes whose intensities were less than the median plus two standard deviations of background level were identified as null.
As a second biomarker for RR in multiple ethnic backgrounds, increased serum IP-10 levels were identified, whereas CCL18, which is elevated in lepromatous leprosy [ 30], decreased at early RR in 6/10 patients who developed RR.
Samples were normalised by the quantile algorithm, genes with signal below background levels were excluded, and differentially expressed genes were identified by fold change calculations and with the Illumina custom differential expression algorithm (described in the Illumina Gene Expression Module user guide) to identify ⩾2-fold and statistically (P<0.01) differently expressed genes.
No significant difference in background level was observed.
The background level was defined as the level at which low level transcription becomes indistinguishable from other background signals.
Therefore spots near the background level have a higher QM if the background level is higher.
The background level was estimated by omitting the primary antibody.
No benefits to sensitivity or background cleanliness were identified.
No background correction was performed, as overall background levels were very low.
