What causes genetic mutations in lung cancer?

This video is intended for non-US residents.

“Genetic mutations are changes in genes or proteins that affect how a cell works.

Genetic changes in cancer cells do not occur in normal cells.

Cancer cells can be tested for the presence of genetic mutations.
In lung cancer, tobacco is the leading cause of genetic changes.

For more information on lung cancer and lung cancer treatments, visit:
http://www.lifewithlungcancer.info