《科学》杂志刊登的论文中，这些科学家确认，与新病毒基因关系最密切的是源于北美和欧亚大陆的猪流感病毒。
In a paper published in Science, they confirm that the closest genetic relatives of the new virus are swine-flu strains from both North America and Eurasia.
这个由孟山都公司发现的基因，使北美的玉米产量增加了10个百分点。
The gene was developed by Monsanto to increase yield by 10 percent in North America.
在加利福尼亚病毒样本中发现的两种菌株的基因很常见，属于北美和欧亚猪流感株。
The two strains whose genes are found in the hybrid belong to influenza families known generally as North American and Eurasian pig flu.
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