Tiny motors delivered nano-particles to the stomach lining of a mouse They are made of polymer tubes and coated in zinc When they come into contact with stomach acid, the zinc produces bubbles of hydrogen, which propels them into the stomachs lining When they reach the lining, they attach and dissolve, to drop their delivery It's hoped the tech could be used to deploy drugs into locations in humans

By Sarah Griffiths for MailOnline

Published: 05:33 EST, 20 January 2015 | Updated: 10:40 EST, 20 January 2015

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Microscopic machines have travelled inside a living animal for the first time.

The minute motors delivered nano-particles to the stomach lining of a mouse, with no toxic effects.

Its hoped the technology could one day be used to deploy drugs into certain locations in the human body.

'Micromotors' have travelled inside a living mouse for the first time to deliver nano-particles to its stomach lining. They can be seen in a scannning electron microscopy (SEM) image on the left, while the right-hand image with added x-ray data shows their zinc coating

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Microscopic machines travel inside a living ANIMAL for the first time - and could one day be used to deliver drugs in ...