The phrase "a slight decrease in levels of" is correct and usable in written English.
It can be used when discussing changes or trends in data, statistics, or measurements, particularly in scientific or analytical contexts.
Example: "The study revealed a slight decrease in levels of pollutants in the river over the past year."
Alternatives: "a minor reduction in levels of" or "a small drop in levels of".
Moreover, Plrx-deficient parasites show a slight decrease in mRNA levels of thioredoxin peroxidase 1 (the1), the major cytosolic peroxiredoxin of the parasite, and ribonucleotide reductase (RiboR).
After BITC treatment, we observed a sharp decrease of polysome-associated Mcl-1 mRNAs (P/U<1) and a slight decrease in the levels of the cap-dependent actin mRNAs.
Surprisingly, overexpression of DEC1 led to an obvious increase in the level of endogenous cyclin E, but not of endogenous p53 protein, and a slight decrease in the level of endogenous p21 protein without affecting their mRNA levels.
(A ) A slight decrease in the level of 154Q ATXN1 was observed with age in Atxn1 154Q/+ samples, but no changes were observed in the levels of 2Q ATXN1.
Immunohistochemical analysis of the calcified cartilage revealed a slight decrease in the level of MMP-13 in TLN-treated dogs (19.7 (5.9)%) compared to control dogs (22.4 (2.3)%, NS).
Twenty-five of these 27 patients had an increase in plasma level of CFH in remission compared with in the active stage, whereas only two patients had a slight decrease in plasma level of CFH in remission.
In our studies with the CP1 peptide, a slight decrease in the level of bis-ANS binding had no bearing on chaperone activity.
In this experiment, the elevated levels of proline were accompanied by a slight decrease in glutamine levels (data not shown), but the total levels of proline, glutamine, and glutamic acid, which are metabolically interrelated, were higher in the stressed tissues.
In the seedlings 3, 8, and 14 days after germination, the expression of both genes remained at stable levels, with a slight decrease in transcripts levels concomitant to an increase in seedling age (Figure 2B).
Treatment of BAEC with 10 µM of Aβ led to a slight decrease in the basal levels of cGMP (Fig. 2A).
