Wouldn't it be great if we could just grow new organs? It sounds like science fiction if you could grow a new kidney and transplant that organ. Bioengineers are working aggressively to re-create human tissues by growing cells and looking for a way to assemble the cells into a complex organ. Researchers have discovered a way to make living cells self-assemble like building blocks. This type of self-assembly may ultimately lead to blood vessels and other complex structures. Ali Khademhosseini, a bioengineer at Harvard Medical School, is working on more-complex self-assembling structures found in the liver, pancreas, and heart. Source: Technology Review