The cell used as the donor for the cloning of Dolly was taken from a mammary gland , and the production of a healthy clone therefore proved that a cell taken from a specific part of the body that could recreate a whole individual . The cell used as the donor for the cloning of Dolly was taken from a mammary gland , and the production of a healthy clone therefore proved that a cell taken from a specific part of the body could recreate a whole individual .