Key points from article :
Scientists find out genetic clues for long lifespan of Galápagos giant tortoises.
These tortoises live between 100 to 250 years.
Have gene variants that promote healthy, full immune system, quick DNA repair.
Also have a natural defence against cancer in their immune system.
Potential to use this knowledge to prolong human life in the future.
Study by University of Oviedo, Spain, published in Nature Ecology & Evolution.
