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   51249
   It has been established that distant evolving clusters show remarkably
   high blue galaxy fraction. These blue galaxies are identified as
   "active" galaxies showing spiral or irregular morphology. This so
   called Butcher-Oemler effect suggests galaxies in clusters are in
   drastic evolution since z around 0.5 epoch. If we accept the assumption
   that heavy elements in ICM are ejected from cluster galaxies, the
   evolution of galaxies must affect the ICM enrichment. However
   observations of such distant clusters can't avoid the selection bias
   toward X-ray luminous, well-evolved clusters. We propose the nearby BO-
   like cluster DC0608-33. It has unusual high spiral fraction despite of
   its richness and compactness, just like distant BO clusters.
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