The phrase "a rare example where" is correct and usable in written English.
It can be used to introduce a specific instance that is uncommon or noteworthy in a particular context.
Example: "This study serves as a rare example where traditional methods have outperformed modern techniques in data analysis."
Alternatives: "an unusual case in which" or "a unique instance where".
In one case sonication results in the lowering of hydrogen evolution rate thus providing a rare example where sonication lowers the overall reaction rate.
Here, we present a rare example where structural information combined with ab initio calculations clearly indicate that the observed difference in biological activity is dominated by conformational effects.
The Crazy Taxi vs Simpsons Road Rage case was a rare example where there was a patent and therefore ideas could be pursued.
Former Mojo editor Paul Du Noyer describes the album as "Harrison's handful of earth upon the Beatle coffin", but, less impressed with the composition, he cites "Wah-Wah" as a rare example where "the material is probably too slight to carry the colossal weight of Spector's production".
The Serengeti is a rare example where – through brilliant foresight – a large-scale ungulate migration has been saved because of well-executed reserve design.
This position is predicted to occur in the binding cavity of GP-9 [11], and so may represent a rare example where any variation in the encoded residue negatively impacts the binding capability and, hence, biological function of the protein.
Additionally, this is one rare example where the molecule to be oxidised has no phenolic alcohol moiety but a secondary amine.
Clegg says this is a rare example of where he and the Daily Mail agree.
This appears to be one of the rare examples where a groundbreaking technology ends up being supplanted by its predecessor.
Thus, for example, while "split from" should mean that a new daughter gene is formed in part from an original parent gene, with retention of a modified parent gene, there are rare examples where during annotation the modified parent gene is deleted, without formally having been "killed".
We designed a new method using the Daphnia magna - Pasteuria ramosa system, one of the rare examples where coevolution has been documented, in order to resolve the steps of the infection and analyse the factors that influence each of them.
