What Is A Tumor?

You hear about tumors all the time, but what are they? How do tumors develop and spread throughout the body?

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Read More:
Tumor Paint Glows for Surgery
http://news.discovery.com/tech/tumor-paint-glows-for-surgery-150408.htm
“Olson and his colleagues at the Fred Hutchinson Cancer Center in Seattle developed a kind of tumor paint that makes cancerous tissue glow.”

How Do Tumors Grow?
http://www.scientificamerican.com/article/how-do-tumors-grow/?page=1
“On a sweltering August evening in 2009 Pat Elliott noticed that her feet seemed swollen.”

DNA Damage & Repair: Mechanisms for Maintaining DNA Integrity
http://www.nature.com/scitable/topicpage/dna-damage-repair-mechanisms-for-maintaining-dna-344
“DNA integrity is always under attack from environmental agents like skin cancer-causing UV rays. How do DNA repair mechanisms detect and repair damaged DNA, and what happens when they fail?”

Use polio to treat cancer?
http://www.cbsnews.com/news/polio-used-to-treat-cancer-60-minutes/
“Like many original ideas, Matthias Gromeier’s notion that polio might kill cancer tumors was met with disdain.”
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