Cancer as an Environmental Dis

Cancer as an Environmental Disease:Liver Cancer in Bangladesh(2)

http://www.100md.com 2019年2月1日《特别健康·下半月》 2019年第2期

1.1Cancer may be caused by environmental factors

These genetic changes happen in many different ways. Many are the result of errors that occur when cells divide， as they naturally do throughout the lifespan. They can also occur as a result of exposure to substances that damage DNA， such as the chemicals in tobacco smoke ......

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