这些无毒基因编码含偶数个半胱氨酸的小分子量蛋白，在叶霉菌毒性菌株中的存在与否及存在方式各不相同。
All the Avr genes encode small molecular weight proteins with even Numbers of cysteines, and their existence and variance are different in the virulent strains.
半数受害者都已住院，如此高的住院率表明这可能是一种毒性特别强的大肠杆菌菌株。
Half of the victims have been hospitalised, a high rate that may indicate an especially virulent strain of E. coli.
按顺序排好新菌株的基因，研究人员在实验室中重新构建了它，并把它与猪相接触。证明了该菌株会蔓延的，但只有轻微的毒性。
Having sequenced the new strain's genes, the researchers recreated it in a laboratory and exposed it to pigs. The strain proved contagious but only mildly virulent.
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