| http://www.w3.org/ns/prov#value | - U.S. Pat. No. 4,693,556 to McCaughan Jr.; U.S. Pat. No. 5,059,191 to Beer et al. and U.S. Pat. No. 4,998,930 each disclose devices which use red light conducted by optical fibers to an internal site in the human body to kill cancer cells or other tumors.
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