Decellurized pig heart or “ghost heart’. Decellularization is a processed tissue treatment by which cells are discharged. This is a technique being developed that may eventually produce organs for transplantation, composed of a patient’s own cells. The idea is to take a donor organ and strip it of all its cells, leaving nothing but the extracellular matrix that held the cells in place. This scaffold of connective tissue—called a “ghost organ” for its pale and almost translucent appearance—can then be reseeded with a patient’s own cells, with the goal of regenerating an organ that can be transplanted into the patient without fear of tissue rejection.