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Micro Microscope

Photo Courtesy Lazar Partners Ltd.
The world's smallest microscope, just one-tenth of an inch in diameter, is helping doctors at the UW Medical Center diagnose cancers of the digestive system.

Attached to a flexible tube, it can be snaked down a patient's throat to enable doctors to examine suspicious cells inside the body and pinpoint exactly where they want to biopsy. The microscope is called the Cellvizio, and only 40 of them exist worldwide.