This has got to be one of the craziest stories that have evolved over the last year or so. I still find it difficult to wrap my brain around it. The implications are enormous, though.

"Forgacs retrofitted an ink-jet printer for his "bio ink," composed of multicellular assemblies, called spherical cell aggregates, that can be printed onto special bio gels. After each layer of cells is printed, an intervening layer of gel is laid down. As a result, the cell aggregates are stacked into a hollow tube configuration. Chemicals are used to coax the cells into fusing into a tube after the gel is dissolved."