why cancer occur
ᴅᴏ ɴᴏᴛ ᴅᴀʀᴇ ᴛᴏ ᴄᴏᴘʏ ᴘᴀsᴛᴇ ɪᴛ ғʀᴏᴍ ɢᴏᴏɢʟè
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Cancer is a disease caused when cells divide uncontrollably and spread into surrounding tissues. Cancer is caused by changes to DNA. Most cancer-causing DNA changes occur in sections of DNA called genes. These changes are also called genetic changes.
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