Bioc community: Try out our new web-based GO traversal tool at: http://franklin.imgen.bcm.tmc.edu/services Our tool is: a) based on R and SJava with an extensive object oriented structure. b) can analyze probe-lists from a number of affy chips as well as the NIA clone set for cDNAs. In the future we plan the release of the R packages/ object structure we have developed. Chad