The phrase "attenuated level" is correct and usable in written English.
It can be used in contexts related to science, technology, or discussions about reduced intensity or strength of a signal, effect, or condition.
Example: "The researchers observed an attenuated level of response in the subjects after the treatment was administered."
Alternatives: "reduced level" or "diminished level".
The attenuated level of responding was not decreased enough to prevent self-administration of cocaine on the second day of testing, a testament to the powerful influence of cocaine.
At the same time, each perirhinal lesion cohort performed above chance, though at much lower levels than the sham rats, that is, they could still distinguish the novel objects at an attenuated level.
The sign of the effect depends on cellular context, implying that some of the emerging phenotypes in RASopathies may be caused by increased, as well as attenuated, levels of Ras signaling.
Work et al. (2010) suggest several reasons why this would happen: under nitrogen deprivation, starchless mutants metabolise less acetate and have severely attenuated levels of photosynthetic O2 evolution compared to the WT.
All the life-span-extending herbs (SQDB, CIN and GS) also attenuated levels of H2O2 and enhanced small heat shock protein expression.
These results correlate well with the results in Figure 2 wherein a reduced but not completely attenuated levels of IFN-γ and IL-12p40 levels were obtained upon neutralizing either RANTES or IP-10 in BCG infected GM-CSF-DCs.
These changes were associated with reduced PARP cleavage and attenuated levels of cleaved caspases.
Treatment with teriflunomide also attenuated levels of spinal cord-infiltrating T cells (Fig. 3d), NK cells, macrophages, and neutrophils [ 81].
They also observed attenuated levels of radioactivity in oocytes from R/O hens compared with those from WT hens.
After 24 hours, the study authors obtained bronchoalveolar lavage fluid and found attenuated levels of inflammatory cells.
Sulfadimethoxine and sulfamethazine were detected in shallow groundwater near field flood irrigation gates, but at highly attenuated levels.
