您要查找的是不是：
- Health experts are worried that a new, more virulent strain may be to blame. 卫生专家考虑这归咎于一种毒力更强的新菌种。
- But she would like to start a conversation about why the United States seems particularly vulnerable to such a virulent strain of anti-intellectualism. 但她想要展开一段对话，讨论美国为何似乎特别容易感染反智传统的有毒菌株。
- The nucleotide sequence homologies of the prevalent virulent strain with China strain, with Brescia strain and with Alfort strain were 81.9%, 83.4% and 83.5% respectively. 结果表明 ;该猪瘟流行毒株的E2核苷酸序列与C株、Brescia株和Alfort株的E2核苷酸序列同源性分别为 81.;9%25、83
- Its mortality rate, in its most virulent strains, is 90%. 最致命的病毒株引起的死亡率达到90%25。
- The ICPI in 1-day-old chickens was 1.51,MLD in chicken embryos was 10 -8 ,MDT was 46.2 h,EID 50 in chicken embryos was 10 -10.1 .According to the provided criterion,the results indicated that the avian NDV isolated strain be a virulent strain. 该新城疫病毒分离株对 1日龄雏鸡脑内接种致病指数 (ICPI)为 1.;5 1;鸡胚最小致死量 (MLD)为 10 -8;平均死亡时间 (MDT)为 46
- The cells were infected by Legionella virulent strain AA100 of different growth phase and its growth and replication status in monocyte-macrophage cells and neutrophils were compared. 用不同生长时期的军团菌毒力株AA100,感染诱导分化成功的单核巨噬细胞和中性粒细胞,并比较其在巨噬细胞和中性粒细胞中的生长复制状况。
- Chickens were challenged with 30 LD50 NDV virulent strains at 35 day-old. 35d龄则用30LD50的NDV强毒进行攻毒保护试验。
- The results indicated that a strain from duck named Y01 was avirulent, and the others were virulent strains equivalent to the standard virulent strain F48E8. 结果显示，7株禽副粘病毒的毒力除分离自鸭的1株Y01属于弱毒株外，其余6株的毒力均与F48E8相当。
- The virulent strains had a polysaccharide capsule and formed smooth colonies on agar medium. 有毒菌株具有多糖荚膜它在琼脂培养基上形成光滑的菌落。
- Some virulent strains of PVX cause rugosity go the leaves even crinkling, called PVX crinkle. PVX的有些强毒株系引起叶子的粗缩甚至皱缩,叫做PVX皱缩。
- duck plague virus virulent strain 鸭瘟强毒
- ducks infected with DPV virulent strain 鸭瘟病毒感染鸭
- This strain of wheat can grow during a cold spring. 这种小麦可以在寒冷的春天生长。
- DPV virulent strain infected ducks DPV强毒感染鸭
- However, between two isolated strong virulent strains, there was a low homogeneity of 88.2% in nucleotide, and there was a high homogeneity of 93.9% in amino acid residue. 两分离株核苷酸序列同源性较低;为88.;2%25;但氨基酸序列同源性较高;为93
- A cure for MRSA appears to be within grasp after scientists claimed to have developed a drug that destroys the most virulent strains of the deadly superbug. 一种新的对付MRSA（一种对抗生素有极强抗药性的金黄葡萄状球菌，是医院内主要的感染源）的方法即将成功。科学家宣称已经研发了一种新的药物可以摧毁这种致命的超级细菌。
- He finally break down under the four-hour's strain. 在四小时的压力下他终于支持不了。
- Paying all the bills is a strain on my resources. 支付所有这些费用是我经济上的一大负担。
- Her speech continued in the same dismal strain. 她以悲伤的语调接著往下说。
- Could you stand the strain? Oh, that's nothing. 这样累你受得了吗？这没什么。
