RADON
\ɹˈe͡ɪdɒn], \ɹˈeɪdɒn], \ɹ_ˈeɪ_d_ɒ_n]\
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Radon. A naturally radioactive element with atomic symbol Rn, atomic number 86, and atomic weight 222. It is a member of the noble gas family and released during the decay of radium and found in soil. There is a link between exposure to radon and lung cancer.
By DataStellar Co., Ltd
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A gas that occurs naturally as the by product of the decay of naturally occuring uranium. The gas is both odourless and colourless. Although named a s aknown carcinogen by the EPA it is only ever found in small quanitites and no side effects have been noticed even after prolonged exposure.
By Henry Campbell Black
Word of the day
Photofrin II
- purified component HEMATOPORPHYRIN DERIVATIVE, consists a mixture oligomeric porphyrins. used therapy (PHOTORADIATION); treat malignant lesions with visible light and experimentally as an antiviral agent. It is the first drug to be approved in use of photodynamic therapy United States.