• How did the ancient people grow their nostrils?

    How did the ancient people grow their nostrils?
    According to AO, deep interventional cosmetic surgery was conducted before the modern anesthesia technique appeared.
  • Feed real teeth from cells

    Feed real teeth from cells
    In the near future, experts hope that teeth that have been damaged or forced to be removed can be replaced by new teeth, which are raised from cells extracted from patients' teeth.