The ability of self-renewal and multidirectional differentiation can offer replacement treatment for multiple diseases.

干细胞以其自我更新及多向分化的能力可以对多种疾病进行替代治疗。

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But as the population ages, the growing number of people with the disease includes more and more who are too frail, or too sick with multiple diseases, to withstand open-heart surgery.

但是，随著病人的老龄化，越来越多的人患有此种疾病。而且，越来越多的人，因为身体太弱或患太多其他疾病，无法承受心内直视外科手术治疗。

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With few new treatments emerging from the drugdevelopment pipeline, drugmakers are pouring money intofinding new uses for specialized biotech drugs that may beeffective against multiple diseases.

新药研发中的出现的新治疗手段也少之又少，制药商转而把钱花在寻找能够治疗多种疾病的特殊生物药品上。

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Some of the diseases are well known, such as rheumatoid arthritis, multiple sclerosis and type-one diabetes.

VOA: special.2009.04.14

Some states only permit use for certain diseases like cancer, multiple sclerosis or AIDS.

VOA: special.2010.10.11

Diseases like multiple sclerosis and type one diabetes are more common among whites.

VOA: special.2010.06.15

Properly coordinating care for seniors with multiple chronic diseases may both save money and improve health outcomes.

FORBES: Medicare Vouchers Won't Reduce Health Spending

They are frail, often suffer from multiple chronic diseases (such as heart failure, dementia, or diabetes), and are impoverished.

FORBES: Medicaid, The Frail Elderly, And Federal Budget Cuts

This is a particular problem with the frail elderly who often suffer from multiple chronic diseases and may need personal assistance as much as medical treatment.

FORBES: The Need to Link Medical and Social Care for Seniors