The BIOBASE ExPlain(tm) Analysis System promotes biological interpretation of large-scale data such as gene expression, proteomics and ChIP-chip data. All Harvard Resaerchers are free to access Biobase Explain Analysis system. It is available through the Harvard proxy server. To sign up for an account, go to: http://nrs.harvard.edu/urn-3:hul.eresource:humgenmu and scroll down to the gray box with the link for new users. That should allow you to set up a new account and anyone with access to the proxy server (anyone with a Harvard ID and PIN) should be able to establish an account. For more information, see the C3 Bioinformatics at Harvard website at http://hms.harvard.libguides.com/c3bioinformatics.