尽管巴斯德研究所的乙型肝炎疫苗在世界市场的销售情况尚难预测,但是他们对该疫苗的研究正取得新进展。该所计划开始在3000名志愿者中接种用重组体DNA(rDNA)中国仓鼠卵巢细胞制备的乙型肝炎疫苗,进行临床试验。该疫苗包含S和前S病毒包膜蛋白,它所产生的免疫力大于仅含S蛋白的疫苗。如果试验成功,今 Although the Pasteur hepatitis B vaccine sales in the world market are still hard to predict, their research on the vaccine is making new progress. The program begins clinical trials of vaccinating 3,000 volunteers with Hepatitis B vaccine prepared with recombinant DNA (rDNA) Chinese hamster ovary cells. The vaccine contains both S and pre-S virus envelope proteins, which produce more immunity than the S protein-only vaccine. If the test is successful, today