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Growing body parts in the lab

Meera Senthilingam, for CNN
Updated 5:52 AM EDT, Tue August 11, 2015
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Researchers at Massachusetts General Hospital have used human cells to regenerate the arm of a macaque monkey. The aim is to one day grow human arms for transplantation.
Researchers at Massachusetts General Hospital have used human cells to regenerate the arm of a macaque monkey. The aim is to one day grow human arms for transplantation.
Courtesy Sam Panthaky/GettyImages
graphic warning - single image
The process involves removing all cells from the using fluids and detergents. Cells are then regrown and replaced using human progenitor cells, which can develop into blood, nerve or muscle cells.
The process involves removing all cells from the using fluids and detergents. Cells are then regrown and replaced using human progenitor cells, which can develop into blood, nerve or muscle cells.
Courtesy Massachusetts General Hospital Center for Regenerative Medicine
Harald Ott and his team at Massachusetts General Hospital recently regenerated the limb of a rat in the lab, by flushing the arm of all cells and then regrowing them with cells from a different rat.
Harald Ott and his team at Massachusetts General Hospital recently regenerated the limb of a rat in the lab, by flushing the arm of all cells and then regrowing them with cells from a different rat.
Courtesy Massachusetts General Hospital Center for Regenerative Medicine
The process takes place in a tightly controlled environment with set temperatures, humidity, pH, oxygen levels, and pressure. Pictured, the regrowth of the rat arm inside a bioreactor.
The process takes place in a tightly controlled environment with set temperatures, humidity, pH, oxygen levels, and pressure. Pictured, the regrowth of the rat arm inside a bioreactor.
Courtesy Massachusetts General Hospital
Salamanders, such as the red spotted newt, can regrow an impressive range of body parts, including full limbs. Maximina Yun at University College London is studying their abilities to explore the potential to apply this to humans.
Salamanders, such as the red spotted newt, can regrow an impressive range of body parts, including full limbs. Maximina Yun at University College London is studying their abilities to explore the potential to apply this to humans.
Courtesy Maximina Yun/UCL
The main option for amputees today are prosthetic limbs or transplants, where available. The use of transplants requites recipients to take lifelong immunosuppressive drugs which increase the risk of other infections and potential development of cancers.
The main option for amputees today are prosthetic limbs or transplants, where available. The use of transplants requites recipients to take lifelong immunosuppressive drugs which increase the risk of other infections and potential development of cancers.
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