Causes, Smoking: p53

This series of animations shows how mutations in the p53 gene are found in 70% of lung tumors, the highest rate for any cancer.

Gene mutation in a cell can result in uncontrolled division called cancer. Exposure of cells to certain chemicals and radiation increases mutations and thus the chance of cancer.| AAAS#5C/H6
Cell functions are regulated. Regulation occurs both through changes in the activity of the functions performed by proteins and through the selective expression of individual genes. This regulation allows cells to respond to their environment and to control and coordinate cell growth and division.| NSES#C 1.4