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Medical Definition of K region
1. Carbons 9 and 10 of the phenanthrene ring system; thought by some to be the reactive spot in the various hydrocarbon carcinogens. (05 Mar 2000)
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1. Carbons 9 and 10 of the phenanthrene ring system; thought by some to be the reactive spot in the various hydrocarbon carcinogens. (05 Mar 2000)