What does it mean when a UniGene cluster is retired?
UniGene clusters are retired for several reasons. A cluster is retired if the sequences in the cluster are retracted. A cluster may also be retired if it is merged with others during periodic UniGene reclustering; the new cluster gets one of the preexisting cluster IDs, while the other IDs are retired. A cluster may also be retired if it is split into two or more clusters, although in most cases such splits result in one of the new clusters retaining the old ID number. A utility that allows users to see what has become of the sequences in retired clusters is planned for the future.
