'compelling expression of' is correct and usable in written English.
You can use it to describe an expression that is very convincing and powerful. For example, "Her compelling expression of the ideas in her speech convinced the audience to reconsider their beliefs."
Some fans (myself included) found it a more compelling expression of her edgy, poetic Scottish sensibility than the somewhat retro though undeniably beautiful Ratcatcher.
Marcelo Gomes brought an unexpected warmth and sweetness to his well-danced Camille, and he and Paloma Herrera, deliciously wicked yet sympathetic as Valencienne, made of the characters' central pas de deux a compelling expression of love.
If you didn't have a lump in your throat a moment before, you likely did after that compelling expression of the real reason for war - to protect and preserve what we as Americans hold dear.
Some of the most compelling expressions of this view are poems.
In particular, the work Wheatfield with Crows serves as a compelling and poignant expression of the artist's state of mind in his final days, a painting Hulsker discusses as being associated with "melancholy and extreme loneliness," a painting with a "somber and threatening aspect", a "doom-filled painting with threatening skies and ill-omened crows".
These data provide compelling evidence that expression of the AQP on the plasma membrane is essential for protecting human prostate cancer cells from cryoinjury, suggesting a specific functional role of the AQP in cancer cell biology.
Furthermore, there is compelling evidence that expression of V600EBRAF in primary human melanocytes causes senescence in vitro (Gray-Schopfer et al, 2006; Michaloglou et al, 2005) indicating that mutated BRAF alone is not sufficient for malignant transformation to melanoma.
These studies provided compelling evidence that expression of β-catenin is a necessary condition for the expression not only of major enzymes of ammonia detoxification, but also of many CYP isoforms in the liver (Braeuning 2009; Loeppen et al. 2005; Sekine et al. 2006).
Utilizing methylated reporter assay, chromatin immunoprecipitation (ChIP) assay and treatments with trichostatin A (TSA)/5-aza, we provided compelling evidence that the expression of Nrf2 is epigenetically regulated during the development of prostate tumors in TRAMP mice.
Multiple unique peptides mapping to a single gene provide compelling evidence for the expression of the product(s) encoded by that particular gene.
Despite the association of MHC specificity with lineage fate, there is compelling evidence that thymocyte expression of lineage-specific transcription factors is not due to the MHC specificity of the engaged TCR or the coreceptor proteins themselves.
