%0 Journal Article %T Noise-induced first-order transition in anti-tumor immunotherapy %A Wei-Rong Zhong %A Yuan-Zhi Shao %A Zhen-Hui He %J Physics %D 2005 %I arXiv %X We studied the single-variable dynamics model of the tumor growth. A first-order phase transition induced by an additive noise is shown to reproduce the main features of tumor growth under immune surveillance. The critical average cells population has a power-law function relationship with the immune coefficient. %U http://arxiv.org/abs/physics/0508044v1