One project involves tobacco plants genetically engineered to keep their leaves during water shortages.

其中一个项目涉及通过基因工程使烟草植物在缺水时保持叶子的生长。

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Monsanto expects to be ready in 4 years to market its first corn seeds genetically engineered to resist drought.

VOA: special.2009.01.20

The United States Department of Agriculture has given farmers permission to plant genetically engineered sugar beets with some conditions.

VOA: special.2011.02.15

"In general,we find that genetically engineered crops have had fewer adverse effects on the environment than non-GE crops produced conventionally."

VOA: special.2010.04.27

The mice used in the study were genetically engineered to completely lack ephrin-B3 protein.

BBC: Discovery prompts spinal cord hope

Animals, too, have been genetically engineered, mostly by laborious and imprecise trial-and-error breeding techniques.

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In fact, there are scores of non-genetically engineered herbicide-tolerant varieties grown all around the world.

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