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tissue culture

(Science: cell culture) Originally the maintenance and growth of pieces of explanted tissue (plant or animal) in culture away from the source organism. Now usually refers to the (much more frequently used) technique of cell culture, using cells dispersed from tissues or distant descendants of such cells. An environment created by scientists that is sterile and nutrient rich. The food is to allow the tissue within this culture to easily grow, so that scientists can analyse the tissue more clearly.