Hi,
So I have a filtering question that I am unsure of how to implement in BioMart, or it even can be implemented. So I have two pieced of data which are a n:n relationship. One piece of data is a Protein id and the other is Sample, so I have a sample contains multiple proteins and a protein that can belong to multiple samples. I've selected the protein id as my key. So here is a quick sketch of my tables: MAIN protein_id_key <pk> DM protein_id_key sample_id What I want to be able to do is say give me all the proteins that are found in sample A but not in sample B. Is there a way of doing this and still allowing users to enter information? Ideally I would like a text areas where users can enter in both the samples to include and the samples to exclude. Thanks, Andrew ====================== Andrew Vallejos, M.S. Web Developer Medical College of Wisconsin 414-955-4104 [EMAIL PROTECTED]
