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A-frickin'-mazing!
Scientists working towards developing laboratory-grown livers for transplant have managed to create mini versions of the organ using a 3D printer.
Just half a millimetre deep and four millimetres wide, the tiny livers are capable of performing many critical functions of the real thing; including producing proteins responsible for ferrying hormones, salt and drugs around the body.
California-based bio-printing pioneers Organovo created the mini organs by using the machine to build up around 20 layers of liver cells - along with cells from the lining of blood vessels to nourish the liver cells with nutrients and oxygen.