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Cell differentiation

progressive restriction of the developmental potential and increasing specialization of function which takes place during the development of the embryo and leads to the formation of specialised cells, tissues, and organs. When young cells develop as a result of cell division, they become differentiated to suit the function they were made for. this is done by the genetic information present in the cell, which will have genes 'switched on and 'switched off to determine the function of the cell.