
Hello, I am trying to convert a file of gene names to corresponding affy probe names. I managed to write a script that puts the genes in an array then I use the feat = getFeature(symbol = gensym, type = "affy_hg_u133a", mart = mart)  in biomaRt however I seem to hit a snag when there is more than probe for a gene name. Does anyone know of an existing script that can do this? thanks Ruppert
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