Melanocyte stem cells can either age and gray or resist damage and become cancerous, depending on the type of stress they face. This finding connects hair graying and melanoma as opposing outcomes of the same cellular decision process. Credit: Shutterstock Throughout life, our cells are continually exposed to both internal and external influences that can harm DNA. This DNA damage is a well-known factor in the development of aging and cancer, yet scientists have long struggled to understand the

Tag-uri: DNA