In a remote part of Switzerland hangs a dull, sour, tannin-rich variety of apple. It has never received much attention. Then in 2009, Swiss scientists discovered that the stem cells of this particularly rare apple could reverse skin aging, increase the lifespan of human cells, and could even possibly grow back lost hair.
Human stem cells can turn into any part of the human body, but the law bans the use of embryonic stem cells in cosmetics, so instead researchers turned their attention towards plants. This particular apple is called Uttwiler Spatlauber and contains high concentrations of stem cells known as PytoCellTec Malus Domestica – the star of the stem cell world – so scientists decided to put the apple to the test.