The phrase "are rather stringent" is correct and usable in written English.
It can be used to describe rules, regulations, or standards that are strict or demanding.
Example: "The new safety protocols are rather stringent, requiring all employees to undergo extensive training before they can operate machinery."
Alternatives: "are quite strict" or "are fairly rigorous."
These criteria are rather stringent, but we found that they reliably classify cells pairs.
This shows that our selection criteria are rather stringent, increasing the probability that identified candidate genes are involved in OFCs.
However, it should be noted that Pfam is not absolutely infallible and some of its threshold values are rather stringent, leading to failure to identify some 'outlying' members of a domain family.
However, the definition used in our study was rather stringent and the mean daily time spent with hyperoxemia was in line with that reported by studies.
For instance, if the cross-validation scheme used for model selection is rather stringent, then overly complex models get sorted out and one source of model selection bias is avoided [2],[2]].
The habitat requirements of the estuary stingray appear to be rather stringent, as significant numbers are only found at particular locations.
Also, the applied search criteria need to be rather stringent to avoid mistakes in the annotation process.
As our criteria were rather stringent, requiring identifiable similarity with the 5' end of the coding sequence of a BLAST ortholog, this is no doubt an underestimate of the 5' UTRs present in our database.
Because our multiple testing correction was rather stringent, we thought that this result warranted further investigation.
Due to the small number of validated targets for each miRNA, the maximal consistent threshold used in the SBM method is rather stringent.
Our criterion is rather stringent, in the sense it requires a perfect match of each R I with the MIPS, KEGG or GO categorization.
