"variable levels" is a correct and usable phrase in written English.
It is often used to describe differences or gradations in something (e.g., "The research showed variable levels of success among different age groups").
Conversely, AMPKα2 is expressed at variable levels in colon cancer cells.
Ibrahim said: "Analysis of the most recent data from the government research station shows variable levels of coral bleaching.
Male birds with consistently high testosterone levels tend to be worse fathers; males with variable levels are better dads.
Differential densities of alignments suggest variable levels of agricultural intensity.
So over millennia, men with high but variable levels of testosterone were the ones most favored by women and therefore most likely to produce offspring, and eventually us.
The regulator said variable levels of compliance with credit laws and guidance meant firms that invest time and effort to comply were at a competitive disadvantage.
Current Research and Scholarly Interests Many adult organs tune their functional capacity to variable levels of physiologic demand.
In addition, NK cells can also express TLRs, at variable levels, and thus downregulation of TLRs might impede the functionality of NK cells directly47.
We tested this hypothesis by creating simulated viromics data sets with variable levels of microdiversity (Supplementary Fig. 20) that we then analysed following standard metagenomics assembly tools.
Young, J. et al. Evidence for BRAF mutation and variable levels of microsatellite instability in a syndrome of familial colorectal cancer.
Note that LPS-induced moderate but variable levels of cell death in the WT (Fig. 3c), but the remaining cells remained viable in prolonged culture (data not shown).
