I have a matrix of normalized microarray gene expression. probe-IDs are in rows and samples are in columns. I don't have any annotation files to pass to limma in order to start my analysis. I only know it is from illumina ht 12 v4 chip. Accession code refers to a GEO data that only covers a small subset of my data.
where can i find the annotations needed for limma? how should i use them?
Is there any way to analyze this dataset without annotation files?