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The most common unapproved treatment among medical tourists, according to the survey, is stem cell therapy.

调查显示，医疗旅游所进行的这类未经批准的疗法中最常见的就是干细胞疗法。

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But like mechanical pumps and artificial hearts, stem cell therapy is a high-tech, high-expense solution for dealing with heart diseases.

但是，和机械泵以及人造心脏一样，干细胞疗法对于治疗心脏病来说也是一种高技术、高成本的解决方案。

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Note that some people often confuse stem cell transplants with fetal stem cell therapy.

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Large pharmaceutical companies such as Pfizer and Merck have so far steered clear of stem cell therapy.

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Now this condition can be repaired with a stem cell therapy (not yet approved in the U.S.).

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