If cancer - genome sequencing proves the hypothesis that each occurrence of cancer produces unique mutations in a particular person, future doctors may be able to customize treatments for each patient. (science.howstuffworks.com)
For example, because individual cells in the tumor probably carry unique mutations, they would be virtually impossible to observe with standard sequencing methods. (sciencedaily.com)
Because each cell has its own unique mutation, when researchers examine a pinch of skin or drop of blood containing millions of cells, most mitochondrial mutations are hidden. (sciencedaily.com)