These living, self-healing robots created from frog stem cells are small enough to travel inside human bodies. They can walk and swim, survive for weeks without food, and work together in groups.
Named xenobots after the African clawed frog from which they take their stem cells, the machines are less than a millimeter wide -- small enough to travel inside human bodies. They can walk and swim, survive for weeks without food, and work together in groups. These are"entirely new life-forms," said the University of Vermont, which conducted the research with Tufts University.Stem cells are unspecialized cells that have the ability to develop into different cell types.
Traditional robots"degrade over time and can produce harmful ecological and health side effects," researchers said in the study, which was published Monday in the Proceedings of the National Academy of Sciences. As biological machines, xenobots are more environmentally friendly and safer for human health, the study said.
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