The LENS (Linking ESTs and their associated Name Space) database links and resolves the names and identifiers of clones and ESTs generated in the I.M.A.G.E. Consortium/WashU/Merck EST project. The name space includes library and clone IDs and names from I.M.A.G.E. Consortium, EST sequence IDs from Washington University, sequence entry accession numbers from dbEST/NCBI, and library and clone IDs from GDB. LENS allows for querying of I.M.A.G.E. Consortium data via all the different IDs. The I.M.A.G.E. Consortium clones and sequences cDNAs for the public domain.