Other genetic changes pinpointed by the Pennsylvania team occurred in genes involved in a cellular waste system which probably ensures these "adhesion" proteins are kept in working order.

宾夕法尼亚大学的研究人员发现，有一些基因变异出现在与细胞排废系统有关的基因中。排废系统的作用可能是使‘粘附’蛋白质能够正常工作。

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The system is designed to identify the presence of contaminants like soil or animal waste on fresh produce.

VOA: special.2011.06.07

Most of it,he says, could be paid for by reducing waste in the existing health care system.

VOA: special.2009.09.12

"At the same time cuts costs, the waste,the fraud,the duplication, endemic to our system and at the same time it covers 31 million people.

VOA: standard.2009.12.25

Coke will also test a waste management system that could be useful at future major sporting events and festivals.

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Medication waste has been reduced, meaning fewer unused drugs go into the waste treatment system and substantial costs are eliminated.

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Kopito, a biologist at Stanford University, recently showed that clumps of the Huntington's protein can clog the cell's waste disposal system.

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