The robots, one-hundredth of a millimetre in size, were made my Chinese scientists using a special 3D printing technique, from a gel that changes shape when exposed to different pH levels.
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HEALTH NOTES: Robot 'fish' could be used to deliver chemotherapy drugs directly into tumours
![HEALTH NOTES: Robot 'fish' could be used to deliver chemotherapy drugs directly into tumours]()
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December 04, 2021
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