The phrase "a significant activation of" is correct and usable in written English.
You can use it to refer to a large amount of activity related to a certain action. For example, "The charity event caused a significant activation of volunteers to help the cause."
In an ex vivo stimulation assay in which memory T cell stimulation can be quantified and characterized in human whole blood [14], purified Gag/Δpp65 particles - in contrast to non-modified Gag - resulted in a significant activation of CD8+ T lymphocytes, while frequencies of activated CD4+ helper T lymphocytes (HTLs) were generally low.
ox-LDL caused a significant activation of NF-κB as evidenced by the detection of enhanced p65 subunit in nuclear extracts.
During sign language conditions, deaf subjects revealed a significant activation of the auditory cortex in both hemispheres comprising Brodmann areas (BA) 42 and 22 corresponding to the secondary associative auditory areas.
Microarray gene expression analysis further revealed an up-regulation of bone markers and other genes associated with skeletal and vasculature development and a significant activation of transforming growth factor β1 downstream genes in LNCaP cells after co-culture with TEB.
Studies show that toddlers who have secure, trusting relationships with parents or non-parent caregivers experience minimal stress hormone activation when frightened by a strange event, and those who have insecure relationships experience a significant activation of the stress response system.
CMS induced a significant activation of extracellular adenosine production.
Coagulation abnormalities have been identified, involving a significant activation of coagulation factors, whereas endogenous anticoagulants (antithrombin, protein S and C) are decreased [8].
In seven patients with hemicrania continua a significant activation of the contralateral posterior hypothalamus and ipsilateral dorsal rostral pons in association with the headache was described.
Using luciferase reporter assays in 3T3-L1 cells, we detected a significant activation of the PPARG promoter in presence of Tmem18 indicating that Tmem18 is an upstream regulator of PPARG signalling.
During regulation we observed a significant activation of a prefronto-parietal network, comprising dorsolateral prefrontal and inferior parietal cortices.
LPS induced a significant activation of lung-marginated neutrophils, promoting shedding of L-selectin (i.e. reduced expression), and upregulation of CD11b.
