| 摘要 |
A therapeutic instrument for treating psoriasis, atopic dermatitis, articular rheumatism and/or cancer or preventing the progress thereof which includes a solid radiation source having a half-life within a range of from 20 to 1.41x1010 years and a radioactivity corresponding to a decay rate within a range of from 10 to 370 Becquerel/g and a solid material coating the same, characterized in that the solid material has a radiation face for radiating radial rays emitted from the radiation source. As the radiation source, use is made of, for example, monazite, while a cotton bag, Japan wax, etc. are usable as the solid coating material.
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