The phrase "a very specific region" is correct and usable in written English.
It can be used when referring to a particular area that is clearly defined or distinguished from others.
Example: "The research focused on a very specific region known for its unique biodiversity."
Alternatives: "a particular area" or "a distinct zone".
She added: "Clearly universities are businesses, they have a real impact (mostly) in a very specific region.
They are based on the detection of interferon gamma (IFN-γ) released by sensitized T cells on stimulation with very specific antigens, early secretory antigen target-6 and culture filtrate protein-10, both derived from a very specific region of MTb, the region of difference 1 (RD1).
These findings concur with our previous observation, that the influence of cell cycle motifs on a cluster of genes obtained from cancer progression is limited to a very specific region, close to the TSS [28].
However, that study was limited to a single year and to a very specific region where large hospitals concentrate, which could explain fairly well the differences encountered.
(ii) Residues involved in the generation of the excited state of process III localize to a very specific region of structure.
It attacks a very specific part of the brain - a small region called the substantia nigra, which plays an important role in movement, muscle control and balance.
The movie is about very specific characters, in a very specific neighborhood, going through very specific ordeals.
Artists Thomas Rousset and Raphaël Verona traveled across the Altiplano region of Bolivia for a very specific reason.
You'd tap an Unown or a Heracross (usually only available in very specific regions, and certainly not in the middle of Chicago), and the game would crash.
Additionally, we show what appears to be clonal expansion of the neuroepithelium in a very specific hypothalamic region giving rise to cells for the tuberal level.
