电离辐射可通过直接作用和间接作用对机体产生广泛的损伤。其中在辐射作用下，激发体内产生自由基，引起脂类过氧化、细胞和酶类及核酸等生物大分子的损害就是辐射损伤的重要组成部分。我们已报道过云芝多糖（CVPS）对小鼠受γ射线辐射后的损伤有明显的保护作用，能使辐射引致 Ionizing radiation can cause extensive damage to the body through direct and indirect effects. Among them, under the action of radiation, it stimulates the production of free radicals in the body, causing lipid peroxidation, damage of cells, enzymes and nucleic acids and other biological macromolecules is an important part of radiation damage. We have reported that CVPS has a significant protective effect on mice after irradiation with gamma rays, which can lead to radiation induced