Wed, 27 Jan 2010 21:10:31 +0100 (AFP/Nature) - Neurons derived from mouse embryonic fibroblasts infected with the three gene cocktail of Brn2, Myt1l, and Ascl1 and cultured for twelve days. Bioscientists said they had turned the skin cells of mice into brain cells in less than a week, in a boost for the quest of growing tissue in a lab to replenish damaged or diseased organs.(AFP/Nature/Thomas Vierbuchen/Marius Wernig)