But experts say it will be very difficult to isolate this part of the protein from the virus to use in a vaccine, or to manufacture it using geneticengineering.
不过，专家们说，很难从病毒中分离出这部分蛋白质用于疫苗，或利用基因工程生产出这种蛋白质。
2
The application of modification technologies such as chemical, physical, enzymatic and geneticengineering methods in wheat protein and up-to-date progress were summarized.
综述了化学方法、物理方法、生物酶法以及基因工程等技术手段在小麦蛋白改性中的应用及最新进展。
3
Geneticengineering is providing a effective new way to improve the seed protein quality of rice grain.