The research team from the University of Sheffield has identified a network of genes that enables sharks to develop and regenerate their teeth throughout their lifetime. Particularly a special set of epithelial cells form, called the dental lamina, which are responsible for the lifelong continuation of tooth development and regeneration in sharks. Humans also possess this set of cells, which facilitate the production of replacement teeth, but only two sets are formed - baby and adult teeth - before this set of specialized cells is lost. http://phys.org/news/2016-02-jaws-humans-teeth-shark.html Dentists could soon start shooting sharks instead of lions.
