http://www.inderscience.com/info/inarticle.php?artid=57925
Researchers at Chongqing University in China have developed an ingestible capsule capable of detecting chemical precursors of a gastric tumor. The findings might allow oncologists to catch the disease at a very early stage. It is based on a modification of existing capsule endoscopy to detect occult bleeding — tiny quantities of blood associated with the earliest stages of stomach cancer.
The diagnostic pill is encased in a non-toxic and acid-safe polycarbonate shell and carries its own power supply, transmitter, and a sensor with a detection limit of six micrograms per liter of fluid.
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