"may exclusively be" is correct and usable in written English.
It is typically used to indicate that something has the sole right or ability to be or do something. Example: The copyright for this book may exclusively be owned by the author.
On the other hand, the utility does not want to disclose all tariffs, some of which may exclusively be available to certain customers or groups.
Therefore, these results suggested that SHP2 may exclusively be responsible for the migration and invasion of oral cancer cells.
During the transition, C. truncatum probably secretes a range of proteins to establish a compatible interaction with its host, including some that may exclusively be involved in switching the pathogen to the necrotrophic phase.
While the former authors [11] found that photophobia might predispose migraineurs for psychiatric comorbidities, the latter showed that photophobia may not exclusively be related to migraine [12].
Looking back on 2 years of successful open-access publication, the secret of our journal may not exclusively be explained by its new and modern form of publication but also by its broad and timely scope as an interdisciplinary forum for research, development and implementation of sustainable energy systems.
Although this effect may not exclusively be related to vaccination [49], novel conjugated vaccines composed of more polysaccharides turned out to be necessary for a sustained broad-coverage.
But chromatin structure and function may not exclusively be regulated through DNA methylation.
These contractions, however, may not exclusively be mediated by the medial muscle pioneers.
Case reports describing chondroblastoma located in the metatarsal base and other non-epiphyseal locations imply that the cell of origin may not exclusively be derived from the physeal plate [5]- [7].
Finally PCT values may not exclusively be related to the underlying infection but to coexisting organ failure as well; the small sample size of the study does not allow a thorough analysis of this issue.
Many findings in the literature point toward a pharmacological effect of calcitonin on chondrocytes [ 26, 35, 37], but the response may not exclusively be mediated by the calcitonin receptors.
