The phrase "a reduction in the activity of" is correct and usable in written English.
It can be used in contexts discussing decreases in performance, function, or engagement in various fields such as science, medicine, or business.
Example: "The study indicated a reduction in the activity of the enzyme after the treatment was administered."
Alternatives: "a decrease in the activity of" or "a decline in the activity of".
Most stressful stimuli lead to a reduction in the activity of TIDA neurons through activation of inhibitory neuronal pathways, with a consequent increase in PRL secretion [ 4].
Moreover, as transformation proceeds in our model, there is a reduction in the activity of key anti-apoptotic proteins, PKB/Akt, Erk, Jnk and p38, and increased activation of p53 upon stress.
However, upon overexpression of yqhD, they have observed a reduction in the activity of the native 1, 3-PD oxidoreductase (1, 3 PDOR), with increased ethanol production.
These results therefore suggested that the modification of CA-4 with bulky substituents at the C-3' position would lead to a reduction in the activity of the inhibitors.
In these situations, there is a reduction in the activity of fibrolytic bacteria, hindering fiber digestibility (Weimer 1996; Owens et al. 1998; Russell and Rychlik 2001) while simultaneously stimulating amylolitic and lactate utilizing-bacteria (Tajima et al. 2001; Nagaraja and Titgemeyer 2007).
In this situation, there is a reduction in the activity of fibrolytic bacteria, affecting the digestibility of fiber, while there is increased activity of amylolytic bacteria, such as Streptococcus bovis and Ruminococcus amylophilus, and lactate users, as Megasphaera elsdenii (Tajima et al. 2001; Nagaraja and Titgemeyer 2007; Petri et al. 2012).
Additionally, a reduction in the proteolytic activity of MMP2 was observed by zymography.
We observed a reduction in the number and activity of larval plasmatocytes after spaceflight.
Antibody blockade of β-defensin results in a reduction in the sNAG-antibacterial activity.
One of the consequences of ovariectomy is a reduction in physical activity.
