Most lung cancer begins at this point.

大部分肺癌就从这里发端。

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In July her cystic fibrosis progressed to the point where doctors put her on a waiting list for a double-lung transplant.

7月，她的囊胞性纤维症恶化，医生们把列入双肺移植手术等候名单。

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On the one hand, some scientists point out that if you clone an embryo, you can produce valuable tissues - such as bone or lung tissue - that could be used to save human lives.

一方面，一些科学家指出，如果你能够克隆人类胚胎，那你就可以生产出能够用来拯救人类生命的组织，例如骨骼和肺组织。

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However, patients with a weak immune system may not be able to do this - at which point the tuberculosis bacteria starts to spread in the lung.

BBC: TB link to ethnic minority poverty

The breaking point came this summer when one of Selekman's gay brothers died, having had hepatitis C and lung cancer.

CNN: Coming out late in life complex but not unusual