Sally Satel highly recommends this article on liver research:  

MIT engineers have developed "mini livers" that could be injected into the body and take over the functions of a failing liver.

[Incidentally, Sally is one of the heroes of the movement to compensate kidney donors. Way back in 2008, she edited a superb book:

When Altruism Isn’t Enough

The Case for Compensating Kidney Donors

If she had been successful in persuading the transplant community then, many of the claimed high-tech solutions to the kidney shortage would not be necessary. This valuable research should continue because it might yield great benefits in the future, but it would not be necessary to claim it is the solution to the kidney shortage. We have known the solution to that problem for several decades — stop legally prohibiting the compensation of kidney donors.]

Frank