< Topic >In the person or the illness person of the animal validity and of killing the harmful microbial especially bacterium selectively with electromagnetics lighting offer of the method. The gram positive bacterium for example complicated medium under existing of the saliva it sterilizes effectively.SolutionsApplying the lighting of the wave length which is beforehand selected to stage and the said remedy limits which the time when it is planned in order to make said erisuroshin B the bacterium of stage and the said remedy limits connect which introduce the composition which includes erisuroshin B as a photosensitizer in the gel into the remedy limits on the biological surface it elapses, it activates said erisuroshin B and inducing the candlepower study reaction and with that, it consists of the stage which kills the said bacterium, and sterilization method of the remedy limits of the illness person where complicated medium exists in the said remedy limits.< Selective figure >Figure 4【課題】ヒトまたは動物の病者において有害な微生物特に細菌を電磁気的な照射により有効かつ選択的に殺す方法の提供。グラム陽性の細菌を複雑な媒体例えば唾液の存在下有効に殺菌する。【解決手段】ゲル中の光増感剤としてエリスロシンBを含む組成物を生物学的表面上の治療域に導入する段階、該治療域の細菌に該エリスロシンBを結合させるために予定された時間経過させる段階、該治療域に予め選択された波長の照射を当てて、該エリスロシンBを活性化しそしてそれにより光力学反応を誘導して該細菌を殺す段階からなり、そして複雑な媒体が該治療域に存在する病者の治療域の殺菌方法。【選択図】図4
