1992年Ｍａｓｏｎ等提出以转基因植物作为疫苗生产载体的概念 ,认为植物作为载体生产疫苗及其它医用蛋白 ,具有成本低廉 ,易于运输及适于口服等优点 ,并就此进行了一系列有突破性的研究。本文旨在对胡萝卜表达ＨＢｓＡｇ做尝试性研究。含前Ｓ2的ＨＢｓＡｇ基因来自噬菌体克隆Ｍ In 1992, Mason et al. Proposed the concept of using transgenic plants as vaccine production vectors, and considered that plants used as vectors to produce vaccines and other medical proteins have the advantages of low cost, ease of transportation and suitability for oral administration. In this connection, a series of breakthrough studies . This article aims to try to study the expression of HBsAg in carrots. The HBsAg gene containing preS2 is from phage clone M