| http://www.w3.org/ns/prov#value | - A transparent, semi-transparent or translucent tissue-engaging head may be illuminated merely by placement of the end of a light pipe or other light source adjacent the tissue-engaging head of device 20. [0185] The illumination source may be powered by AC current, DC current, or it may be battery powered either by a disposable or re-chargeable battery.
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