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Clone, cell or organism genetically identical to the cell or organism from which it has been derived. Clones are produced by asexual reproduction, for example through cell division in bacteria, cell budding in yeasts, or vegetative duplication. Monoclonal systems (systems derived from a single cell) are used for the production of diagnostics and medicines. In 1997 scientists succeeded in cloning a sheep. It is likely that the technique of cloning can be used on all mammals, including humans.

See also: Genetic engineering.

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