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Exposure of ultraviolet-B (280-320 nm, 1.9 mW m -2 s -1 ) radiation of intactSpirulina platensisfor 9 h caused specific loss of the 85.5 KDa anchor protein of phycobilisomes, the major light-harvesting antenna complex of photosystem II. Associated with the loss of 85.5 KDa protein, the UV-B irradiation also caused photobleaching of phycobilins and alteration in the chromophore...