Original sentence: One is the injection of stem cells or progenitor cells (stem cell treatments); another the induction of regeneration by introduced substances; and a third is transplantion of in vitro grown organs and tissues.Regenerative medicine refers a group of biomedial approches to healing that involve stem cells
Edited sentence: Examples include; the injection of stem cells or progenitor cells (cell therapies); another the induction of regeneration by biologically active molecules; and a third is transplantion of in vitro grown organs and tissues (Tissue engineering).It refers to a group of biomedial approches to clinical therapies that may involve the use of stem cells.Regenerative Medicine replaces or regenerates human cells, tissue or organs, to restore or establish normal function