Magnetic bacteria may help build future bio-computers

Microbes that ingest iron and make small magnets inside their bodies are being studied by a team of scientists from the University of Leeds and Japan's Tokyo University of Agriculture and Technology for their possible uses in creating bio-computers. The magnets are similar to the ones used in PC hard drives, and so could be used to create faster bio-computers.
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http://www.bbc.co.uk/news/technology-17981157