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Is it possible that an element - such as manganese - can be transformed into a different element, e.g. iron by a living organism? In current science this is considered impossible: biological processes are believed to involve strictly chemical reactions leaving the nucleus of each element unchanged. In fact, this is an underlying assumption for the use of radioactive tracers in the life sciences. However, substantial evidence has accumulated to suggest that nuclear reactions do occur in biology involving stable as well as radioactive elements. Using such processes, the decay of radioactive isotope may be drastically accelerated - by up to a factor of 200 or more - in cultured microorganisms. Professor Vladimir Vysotskii from the Shevchenko University of Kiev together with Dr. Alla Kornilova from Moscow Lomonosov University has studied biological transformation of isotopes for more than 20 years using highly specific analytical procedures such as mass spectrometry, gamma spectrometry, Mössbauer spectrometry, electronic X-ray element analysis and other. At this meeting, professor Vysotskii will present findings from their experimental work, suggest mechanisms and discuss possible technical applications of these findings, such as cleaning of radioactive waste from nuclear accidents and creation of rare isotopes. A Danish physicist, Henrik Bohr, will comment on the results and their implications.