The phrase "a progression down" is correct and usable in written English.
It can be used to describe a movement or change that occurs in a downward direction, often in a sequence or series.
Example: "The data shows a progression down in sales over the last quarter."
Alternatives: "a decline" or "a downward trend".
At the heart of the duet was a slow, intermittent progression down and up the side of the hill.
Her oncologist started her on a combination of oral chemotherapy that to try and slow her cancer progression down enough for her to enjoy the summer.
In this way, it may directly regulate CDKN2B (a CDK inhibitor controlling G1 progression, down-modulated) and collaborate with down- regulated miRNAs such as miR-145 and miR-195, in modulating key genes such as CDC25B, MYC and PRKDC, involved in cell cycle progression checkpoints and DNA damage response.
If the slope is steep enough, they switch to moving their wings up and down, a progression that could reflect how avian ancestors evolved flight.
What is the most important, early inclusion of the treatment reducing IOP, with a high probability, slowed down a progression of glaucomatous optic neuropathy in this case.
Crist, who now owns an adventure ski company, explains his retirement from competitive down-hilling as a progression into his backcountry ski and media business, Stellar Adventures.
The subsequent aggregation and condensation of the MSCs likely drives further progression down a chondrocyte lineage.
If the therapy is considered an adjuvant tool to prevent progression down the slippery slope of multiple organ syndrome resulting from a biochemical cascade of mediators, then we can compare PMX-F treatment with high-dose steroids.
He also told the story about how he followed Jones's victory progression down to the locker room, where, he said, the first hand he shook was that of wide receiver Dez Bryant — "Dez knows exactly who I am".
Cultural critics have snatched up the gastronomic progression down Clinton Street and waved it about as proof that the Lower East Side is at last riding the slippery slope toward gentrification.
