Sentence examples for based gene expression values from inspiring English sources
Q-PCR and microarray based gene expression values were compared using linear Pearson correlation.
The qRT-PCR based gene expression values between two groups were compared by the nonparametric Wilcoxon test.
DNA-Chip Analyzer (dChip) (http://www.hsph.harvard.edu/cli/complab/dchip/) program was used to obtain model based gene expression value (measures the fluorescence intensity of that gene), then the class neighbors analysis standardizes the expression values for each gene by linearly adjusting their values across all samples to a mean of zero with a standard deviation of one.
To make cross-platform gene expression profiles search possible, they transformed all gene expression profiles to Unigene ID based gene expression profiles, averaging expression values of genes for corresponding UniGene ID if multiple genes are mapped to a single UniGene ID, then measured similarity between expression profiles using Spearman rank correlation coefficient.
To determine the manner in which Cox regression models that are based on gene expression values compare with regression models based on significant clinical covariates, we again performed 1000 independent splits of the data into training and test sets.
In short, genes were sorted based on gene expression values (Z scores) and binned into groups of 100 genes.
To increase specificity, each molecular subtype is defined by a centroid based on gene expression values in the training cohort.
In this study, we presented new procedures to classify patients into different subgroups to detect their treatment effects based on gene expression values.
The expression patterns of DEGs were analyzed by a K-means clustering method [ 73] using euclidean distance based on gene expression values over all input samples (Additional file 5: Table S14).
The reliability and reproducibility of the analyses were ensured by the use of duplicates in each experiment, the normalization of all arrays to the median probe intensity level, and the use of normalized intensities of all arrays for the calculation of model-based gene-expression values based on the Perfect Match-only model [ 82].
