1·Background: Now the contract between health care's provider and purchaser, as a regulatory tool to improve health care system's performance, are widely applied in many countries.
研究背景：目前医疗服务买方和供方之间的合同作为一种提高医疗服务系统绩效的工具、特别是作为一种监管手段在各国的医疗服务领域得到了广泛的应用。
2·The reporter gene vector driven by SOD2 promoter will provide an experimental tool for the further study on the regulatory mechanism of the SOD2 expression.
该启动子的成功克隆和其报告基因载体的构建，为研究SOD2的基因表达调控机制提供了重要基础和工具。