But such applications are still a ways off, she said, as the acoustic lens has not yet been tested on cells or living animals.

但是，这种应用还需要一段时间，她说，因为声透镜尚未对细胞或活着的动物做过测试。

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In many types of surgery pieces of tissue from animals or plastic substitutes are used but that could all be replaced with the patient's own stem cells.

在很多类型的传统外科手术中，小块的人体组织通常取自动物或以塑料制品作为替代物，其实它们都可以用患者自身的干细胞进行替代。

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In animals, placing them in cages full of interesting toys or giving them learning tasks promotes the survival of these newborn cells.

将实验动物饲养在装满有趣玩具的笼子里或者给予它们一些学习任务，这样都可以促进新生神经元的存活。

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Scientists studying cancer in two very different animal species, Tasmanian devils and dogs say they found evidence that some cancer cells are being passed between animals through physical contact, like sex or biting.

NPR: Startling New Evidence Cancer Is Contagious

The huge number of medicines that turn out to cause liver problems, including withdrawn drugs like Baycol from Bayer or Rezulin from Pfizer, were screened first in cells, then in animals before they were tested in large clinical trails in people.

FORBES: Magazine Article

The huge number of medicines that turn out to cause liver problems, including withdrawn drugs like Baycol from Bayer (nyse: BAY - news - people ) or Rezulin from Pfizer, were screened first in cells, then in animals before they were tested in large clinical trails in people.

FORBES: Cell News Opens Door To Drug Discovery