The phrase "a minimum expression of" is correct and usable in written English.
It can be used to describe the least amount or simplest form of something being conveyed or represented.
Example: "The report provided a minimum expression of the project's goals, lacking detail and depth."
Alternatives: "a basic representation of" or "a fundamental indication of".
In addition to the organ marker genes, we identified a multitude of genes (6075 IDs) that were expressed at comparable levels (with a minimum expression of 6, and a range<1) in all five organs (Table S1).
First, a set of all genes with a minimum expression of 10 TPM summed over all samples was analyzed using random forest.
The read processing patterns of loci with low expression levels may be biased by random fluctuations, thus we have only included patterns with a minimum expression of 50 reads.
To facilitate the analysis and build a level of confidence from the sequences cloned in the libraries, signatures were only considered that were 18 to 25 nucleotides in length and with a minimum expression of 1 RPM, representing 137,614 smRNAs.
By requiring that nontargets exhibit a minimum expression of 100 fragments per kilobase of mapped reads (FPKM), which is true of most conserved targets, the list of 600 candidate C. briggsae-positive, C. elegans-negative genes (supplementary table S11, Supplementary Material online) collapses to 41.
114 of the 159 sRNAs had a minimum expression of 50 read counts in 20% of the sequenced libraries, while 70 of the 159 sRNAs had read counts over 50 read counts for 90% of the sequenced libraries representing a very broad set of culture conditions.
Differentially expressed genese were defined as showing a greater than 2 fold change compared to the sham-operated groups in each condition, while a minimum expression value of 5 in at least one of the conditions being compared.
Pathway analysis of differentially expressed genes was performed using IPA (Ingenuity Systems), using a P value cutoff of <0.05 on differential expression and a log fold-change of at least 0.263, corresponding to a minimum expression change of 30% between young and old samples.
For the heat map, the cancer gene list was further filtered by requiring a minimum expression level of at least 1,000 relative fluorescence units in at least 2 different hybridizations.
We also set a minimum expression threshold of two reads per exon.
Therefore, only genes with a minimum expression change of log2 fc ≥ 0.75 during time-course were considered.
