Chromosome to gene Banks, RNA source of life.

染色体来基因库，核糖核酸生命源。

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Because source limited, utilize gene engineering produce from bacterium or yeast for realize industrialization, it is the effective way of solving its imbalance between supply and demand.

由于来源有限，利用基因工程技术从细菌或酵母中生产人溶菌酶实现产业化，是解决其供需矛盾的有效途径。

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S. midwest. The gene crops are designed to resist herbicides and that's allowed farmers to wipe out milkweed, which is the main food source for Monarches.

基因作物可以抵抗除草剂，这样农民就可以用除草剂除掉马利筋，而马利筋是黑脉金斑蝶最主要的食物来源。

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They also haven't been able to identify a typical gene disorder that may be the source.

CNN: iReport: 'Billy's Disease' baffles doctors

University researchers had just pinpointed a source: a bad gene that causes the body to produce an oversupply of interleukin-1, an immune system protein.

FORBES: Magazine Article