...his drab little office...他死气沉沉的小办公室In the Middle Ages the term 'drab' denoted a very simple type of woollen cloth which was used by peasants to make their clothes.中世纪时,drab(“本色布”)一词指的是一种农民用来制衣的非常普通的羊毛织物。Mary...
The results indicated that natural and recombinant Aer toxins had similar antigenicity.试验说明:原核表达的重组Aer毒素 和天然Aer毒素 诱导獭兔产生的血清IgG抗体可以互相识别重组Aer毒素 和天然Aer毒素,重组Aer毒素 和天然Aer毒素 有相似的抗原性.It had no toxicity, irritation, and antigeni...