Amy Karle, a media artist, is prototyping a hand after she wished an exoskeleton for herself. Working with bioscientist Chris Venter in Pier 9's Bio/Nano Lab and Autodesk materials scientist John Vericella, she is currently developing the hand using Stem cells and Ember printer.
Source: http://arstechnica.com/science/2016/05/an-artist-is-growing-a-hand-out-of-human-stem-cells/