Hi, We've just posted raw array data (including .cel and .txt - MAS 4- files) for our paper (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed& dopt=Abstract&list_uids=12736351) in J. Neurosci. last year. The data is posted at the Gene Expression Omnibus- "GEO" (http://www.ncbi.nlm.nih.gov/geo/) under accession # GSE854. There are a total of 29 chips, each from a separate animal in one of three different age groups. Each animal also has behavioral scores from two different cognitive tasks that are known to be dependent on hippocampal function. After assessing cognitive status, hippocampi were dissected and the CA1 layer was sub-dissected for microarray analysis. If you're interested in this data, let me know how the download process goes. If this is a workable solution for posting data, we also plan on posting our newer microarray data on Alzheimer's disease through the GEO (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed& dopt=Abstract&list_uids=14769913) Cheers, Eric