The phrase "assay a subset of" is correct and usable in written English.
It can be used in contexts where you are discussing the analysis or examination of a specific portion of a larger group or dataset.
Example: "In this study, we will assay a subset of the samples to determine the presence of the compound."
Alternatives: "analyze a portion of" or "examine a segment of".
To investigate potential cross-reaction by HI assay, a subset of samples was also tested against three other influenza A strains.
Thus, although genistein treatment did not alter the DNA methylation levels in most regions detected by this assay, a subset of loci showed significant differences in their methylation levels.
We therefore sought to assay a subset of our Y2H interactions, using a very distinct experimental system, namely co-affinity immunoprecipitations (co-IP) from human 293T cells.
In order to validate the remaining 1,018 SNPs prior to the GoldenGate assay, a subset of 22 randomly selected SNPs were tested either by direct sequencing of PCR fragments amplified from the mapping parent(s) being polymorphic for the respective SNP or by high resolution melting (HRM) curve analysis of short amplicons covering the predicted SNP polymorphism (Additional file 1: Figure S1A and S1B).
All samples were run in triplicate and to confirm reproducibility between assays, a subset of samples was run in three independent experiments.
Most FFPE-based research to date has focused on assaying a subset of genes selected based on a current hypothesis of interest (e.g., genes associated with prognosis) or a reduced gene set classifier of molecular subtypes [ 10– 10].
We exemplified the robustness of our VLP method by screening 210 GALR3-VLP varinnts in a radiometric agonist-based binding assay and a subset of 88 variants in a label-free antagonist-based assay.
A quadruplicate growth assay of a subset of the library showed that well-to-well variations were less than 5%, consistent with expected levels of pipetting errors.
To confirm the specificity of the fluorescence signal obtained in the assay, in a subset of samples, the proteasome inhibitor lactacystin (10 μM) was added.
We also demonstrated interactions between six BnaCBLs and 17 BnaCIPKs using yeast two-hybrid assay, and a subset of interactions were further confirmed by bimolecular fluorescence complementation (BiFC).
For instance, our biomarker assay identified a subset of seronegative RA patients who had elevations in serum cytokines suggestive of more aggressive disease, an association that would have gone undetected with current clinical tests.
