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A new, remote-controlled, pill-sized robot that has a camera and moving legs has been developed to scan for cancer in the stomach or colon. Italian scientists sought to find an alternative to the dangerous, invasive and uncomfortable colonoscopy procedure, which traditionally uses a flexible tube, called a snake, with a camera fixed to the end.
http://www.smartplanet.com/business...-comfortable-alternative-to-colonoscopy/1617/