efficient vaccine造句

Development of efficient vaccines against influenza remains a big challenge in the field of disease control
因人类对新出现的病毒缺乏免疫力，开发有效疫苗仍然是预防流感流行的关键。
This novel and efficient vaccine , with the non - cellular structure and no exogenous gene modification , is potential to be not toxic to the recipients . together with characters that it is easy to prepare , this non - cellular vaccine is promising in clinic
的确，由于exosomes具有非细胞结构、未经基因修饰和外源基因导入、对机体潜在危害作用小、制备简单易行等优点受到大家的重视，成为研究新型肿瘤生物治疗制剂和肿瘤疫苗的新方向。
It's difficult to find efficient vaccine in a sentence. 用efficient vaccine造句挺难的