I have list of 25 genes for which I have done qPCR across 3 different samples. When I do statistical analysis only few only them are differentially expressed.
However, if I do a sample-wise correlation analysis, the gene expression data show clear correlation between 2 samples.
My question is, would correlation analysis (probably with heatmap) be an acceptable way to present the data if only few genes are statistically differentially expressed ? If so, please suggest some references regarding that.