What is Growth factor?
A '''growth factor''' is something in the body that allows or deny cells to grow. These factors are normally made up of cell [[hormones]] or other [[proteins]] within the body.<ref>{{cite web|title=Growth Factor|url=http://www.biology-online.org/dictionary/Growth_factor|publisher=Biology Online|access-date=2013-03-12|archive-date=2012-03-11|archive-url=https://web.archive.org/web/20120311080345/http://www.biology-online.org/dictionary/Growth_factor|url-status=dead}}</ref> All growth factors occur naturally within cells and are necessary for the cell life progression and death. ==History== The first growth factor discovered and publicly recognized was in 1986. It was recognized in the form of a [[Nobel Prize]]. The award was given to [[Rita Levi-Montalcini]] and [[Stanley Cohen]]. <ref>{{cite web|title=The Nobel Prize in Physiology or Medicine 1986|url=http://www.nobelprize.org/nobel_prizes/medicine/laureates/1986/presentation-speech.html|publisher=The Nobel Foundation}}</ref> ==References== {{Reflist}} [[Category:Cell biology]] [[Category:Proteins]] {{biology-stub}}