而且这病毒株随时可能变异成更大毒力型。
And the strain could change at any moment into a more serious form.
有若干因素中起着重要作用的毒力和感染发病。
A number of factors play a crucial role in the virulence and pathogenesis of infection.
方法毒力测定和4对引物pcr按常规方法进行。
Methods Narcotics test and 4-pair-primer-pcr are both done in traditional way.
卫生专家担心这一现象归咎于一种毒力更强的新菌种。
Health experts are worried that a new, more virulent strain may be to blame.
我们有充分理由猜测，病毒在传播的过程中，其致命毒力逐渐减弱。
There is good reason to suspect the virus will become less lethal as it spreads.
目的了解吉林省致病性小肠结肠炎耶尔森氏菌血清型毒力基因的分布情况。
Objective To Know about the distributional condition of pathogenic serum type toxicity gene.
最终筛选出FCT10.10为诱变筛选出的高毒力菌株，可作为生产菌株。
Finally FCT10.10 was selected as the highest virulent strain for production.
最终筛选出FCT10.10为诱变筛选出的高毒力菌株，可作为生产菌株。
Finally FCT10.10 was selected as the highest virulent strain for production.
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