Hi, I want to perform differential expression analysis of a GSE Series GSE138214 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE138214) using limma in R. I am unable to extract data from this series as this series has around 14 different platforms.

Using GEOquery and limma package, I am able to differentially analyse genes in Series GSE138260 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE138260), since it has only one platform.

But the GSE138214 series has 14 platforms and I am not sure how to work around it.

Thanks