Invetech, San Diego, Calif., a developer of custom automation solutions for the biomedical market says it has shipped the world's first production model 3D bio-printer. Organovo, San Diego, Calif., developers of the proprietary NovoGen bioprinting technology says it intends to use the device to provide bio printed units to research institutions investigating human tissue repair and organ replacement. For example, researchers can place liver cells on a preformed scaffold, support kidney cells with a co-printed scaffold, or form adjacent layers of epithelial and stromal soft tissue that grow into a mature tooth. The ultimate goal is for surgeons to have tissue on-demand.