Baboon blood research. A captive baboon before cryonic experimental blood replacement surgery. The baboon's blood was replaced with an artificial substitute. Artificial blood can aid the preservation of organs and tissues before transplantation. It can also be used for emergency transfusions, as a replacement for blood lost in surgery and as an alternative to blood during low temperature surgery. Artificial blood also removes the risk of infection and does not trigger an immune response. BioTime, California, USA, in 1992.