The phrase "a rather small portion" is correct and usable in written English.
It can be used when describing a quantity or size that is limited or minimal in comparison to something larger.
Example: "In the study, we found that a rather small portion of participants reported experiencing side effects."
Alternatives: "a fairly small amount" or "a somewhat limited share".
As Creative Strategies analyst Ben Bajarin wrote last week, there are two obvious outcomes for the Apple Watch: it either completely owns the space like its spiritual successor, the iPod, or it dominates the high-end of the market while bringing in a rather small portion of market share, losing out to cheaper Android Wear devices and fitness trackers going for much less.
Second, only a rather small portion of noise corrupted observations of metabolites and proteins is available.
Nonetheless, numerous lines of evidence suggest that either a rather small portion of the available BicD tethers the dynein, or that whatever role BicD plays in dynein recruitment occurs in a temporally limited fashion.
Even though we would assume that the DLPFC as a whole would show an even more diverse differentiation in functional networks, our results relied on the basis of a rather small portion on the DLPFC.
An excellent if rather small portion of skirt steak was cooked admirably rare beneath its fiery crust, with top-notch French fries.
Caution is called for interpreting the results of our study because the regression coefficients reflect that rather small portions of emotional well-being are explained by illness cognitions.
Although this large evolutionary distance would imply that only a rather small fraction of the functional portions of their genomes are shared, comparative studies revealed that most human coding sequences (~91%) are homologous to genes in fish [ 5].
The kids say 'Man, that's the best steak I've ever eaten!' " Mr. Miller is also shrewd in recognizing that parents are after not dumbed-down or deflavorized food for their kids, but rather smaller portions and prices.
Rather only a small portion of the neurons was completely blocked.
On the other hand, the majority of the CRP targets in these cyanobacterial genomes are not conserved either, rather, only a small portion of the CRP targets are shared by more than 2 of the 12 cyanobacterial genomes, even though our motif scanning algorithm might be biased toward the genes that have orthologues in reference genomes (see Methods).
However, it is important to note that the entire trimerization domain is not predicted to be eliminated by this substitution, but rather only a small portion of the coiled-coil domain adjacent to the proline substitution which corresponds to LZ3, is predicted to be perturbed.
