[BioC] markersymol filter problem

[Siarhei Manakou]

Hello,

I am accessing biomarts through bioconductor. It used to be possible to 
use list of gene symbols and retrieve pretty much what you wanted using 
getBM() function and specifying "markersymbol" as filters. Now this 
thing doesn't work anymore. I know that in order to retrieve gene 
symbols from, let's say, ensembl geneIDs - you can specify 
"external_gene_id", as attributes and you will get your list of gene 
symbols. However things don't work other way around and putting 
"external_gene_id" as filters doesn't work. So do you know how it is 
possible to use gene symbols these days in order to retrieve information 
from biomarts?

thanks,
Sergei


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