Is it possible to analyze only a subset of genes from different microarray datasets?

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Hi all! I am new here. I am also new to in-silico analyses. This is my first post. I have been reading a lot of previous posts re R and microarray data analyses, which have been very helpful. So far, the microarray datasets I have compiled all have Affymetrix platforms (various though).
I plan to include different datasets and focus only on genes associated with glucose metabolism (particularly glycolysis, Krebs, and oxidative phosphorylation) and check the clustering of biological samples using PCA. I would like to know if this is possible and if this goal is okay to pursue. I would appreciate all your comments and suggestions.
Thanks

Irene


microarray

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