The purpose ofthis study is to elucidate ofcancer growth phenomenon and to suppo 雌 to the developlnent oftreatment . The paper presentS the development ofa simulator that can be expressed in a short period oftime , the tumor growth observed over long time and difficult ln order to tUmor groWth, it is necessary to produce new blood vessels to supply nutrients . T or angiogenesis has stimulated the production ofvascular endothelial groWth factor by cells . In this way , there is a close

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... ip between U 皿 10r grow 血 and angiogenesis . In this stUdy , we ana 萱 yze fbr cancer growth and angiogenesis us洫 g the particle mode1 . Particle model is analysis method that particle is treated as cancer cells or blood vessels , phenomenon is expressed by 血 e inte 丘on of 血 e p 飢 icies . We stUdy necrosis that occurs in tumor 血side.