The phrase "a demonstrable role of" is correct and usable in written English.
It can be used when discussing the clear and observable function or contribution of something in a particular context.
Example: "The study highlights a demonstrable role of exercise in improving mental health."
Alternatives: "a clear role of" or "an evident role of".
Howard told me the kind of "dogged journalism, the wearing out boot-leather type in the finest tradition of investigation, can still be done by media outlets that are prepared to invest the resources as in money to be able to break these types of stories and play a demonstrable role to bring justice".
We show here that BCG-, M. vaccae- and M. obuense-activated PBMCs contain γδ T-cells that produce the TH1 cytokines IFN-γ and TNF-α, both of which play a demonstrable role in anti-tumour immunity.
The hippocampus has a clearly demonstrable role in object recognition memory tasks which have a spatial component, such as the object-in-place task.
Our recent study showed that calcineurin plays a clearly demonstrable role in controlling hyphal growth, drug tolerance and virulence in C. dubliniensis.
Interestingly, gzmA also showed an inhibitory effect on viral replication in vitro, consistent with its demonstrable role in resistance of mice from mousepox.
While graded signals from the isthmus have a demonstrable patterning role within this region, the significance of segmental identity for neuronal specification within rhombomere 1 is unexplored.
B. subtilis contains a third tatA gene (tatAc) with no demonstrable role in Tat-dependent protein transport [19], [20].
A large proportion of the tested sites had little or no demonstrable role in mediating regulatory element activity.
Accordingly, further experiments will be required to clarify the postulated active vs. passive suppressive roles in regulating IL2 availability, as compared with the demonstrable restrictive role of FOXP3 in regulating IL2 expression.
This interpretation is consistent with what has previously been shown for TE-derived cis-regulatory sequences with demonstrable roles in gene regulation, a majority of which also show little or no evidence of evolutionary conservation [ 10].
