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Published online by Cambridge University Press: 22 November 2011
Data on continuum variability of the Seyfert galaxyNGC 4151 nucleus are compiled. The most of them related to newcycle of the nucleus activity in 1989-1996. X-ray through the UV andoptical data show remarkable similarity in variability characteristics tothose of blazars and do not contradict the supposition that new cycleof activity mainly caused by synchrotron jet.