The phrase "activation required" is correct and usable in written English.
It can be used in contexts where a process or feature needs to be enabled or turned on, often in technical or software-related situations.
Example: "To access the premium features of the app, activation required before you can proceed."
Alternatives: "activation needed" or "activation necessary".
DOI: http://dx.doi.org/10.7554/eLife.08758.008 We first asked whether the grooming elicited by aJO thermogenetic activation required the activity of the aBNs and aDNs by performing a behavioral epistasis test in which we genetically silenced the activity of the interneurons while activating the aJO.
Colonization with the bacterium Pseudomonas aeruginosa was sufficient to activate NF-κB, and this activation required a functional flagellar apparatus.In zebrafish, transcriptional activity of NF-κB is spatially and temporally regulated by specific microbial factors.
Pomegranate juice almost downregulated the TNF α induced Akt (protein kinase B) activation required for NF- κB activity [ 56].
KCa channel activation required Ca2+ influx via voltage-activated Ca2+ currents.
Three independent miRNAs targeted to the 3' UTRs of three different mRNAs repressed translation in proliferating cells but activated translation in cell-cycle-arrested cells; the translational activation required both FXR1 and AGO2, which exhibited a miRNA-dependent association with the mRNAs [11].
That moreover suggested that LP may be activated via C4-by-pass, as LP-mediated C3 activation required MASP-2, MASP-1/3, and C2.
Additionally, HIV-1 transcriptional activation requires proviral displacement from PML NBs by active nuclear actin polymerization.
Nicotinic receptor activation requires more ACh than that needed to activate muscarinic receptors [84].
PARP1 activation requires NAD+ and serves to recruit repair activities to the damaged site.
The AP is activated at low plasma dilutions only and the CP activation requires Ca2+.
T cell activation requires an influx of amino acids.
