A new study shows that African elephants have multiple copies of a gene used for suppressing tumors called TP53. Experiments show that this gene rapidly kills off cancerous cells. Here is a news story that explains the details of how this works: Elephants rarely get cancer, now scientists think they know why - LA Times Here is a link to the actual scientific paper: JAMA Network | JAMA | Potential Mechanisms for Cancer Resistance in Elephants and Comparative Cellular Response to DNA Damage in Humans
