The phrase "a low level background" is correct and usable in written English.
It can be used to describe a subtle or minimal context or setting that does not dominate the main focus of a discussion or narrative.
Example: "The painting features a vibrant foreground, while a low level background adds depth without distracting from the main subject."
Alternatives: "a subtle background" or "a minimal backdrop".
According to the Times, J. Douglas Carroll, Jr., the Tri-State Transportation Commission's executive director, reported that preliminary findings by acoustical experts showed that a low-level background hum inside the house allowed occupants "to operate more smoothly Insertion of such domestic background noises, tended to improve adaptability of people to aircraft noise.
Surprisingly, they found that the best way to sustain concentration wasn't to cut out DMN activity altogether, but to allow it to carry on as a low-level background hum.
The weak AP staining of all axon bundles in Figures 2B and C arises from a low-level background of AP expression in RGCs from the Brn3aCKOAP and Brn3bCKOAP alleles in the absence of Cre-mediated recombination.
NTCs showed a low-level background signal of approximately two positive droplets per NTC assay.
Hypothetically, the expansion of 1264G alleles in the Yoruba could represent a local selection event on top of a low-level background of selection by malaria.
In general there was a low-level background production of 24 nt sRNAs with the background punctuated by regions of significantly higher production.
NTCs showed a low-level background signal of approximately three positive droplets per NTC assay, which could possibly be attributed to low-level template contamination during the preparation of the reaction mixture.
There appears to be a widespread low level background of Cr+ 6 that is not elevated in Jersey City homes despite its historic COPR contamination.
A disadvantage is that there is low level background staining, so that the areas of negative to low expression are not as clean and clear compared with βgal histochemistry.
There were low level background responses to ME-TRAP in group 1 (summed response at peak time point was 13.3 SFU/106 PBMC).
