Jeffery's hair and skin caught fire during a blaze which broke out at a fraternity party she was attending in Toronto.

She was left with 3rd degree burns that threatened permanent scarring and disfiguration.

Doctors at Victoria Hospital in London, Ontario, were certain she would require skin grafts and be left to bear the conspicuous scarring therefrom. She was later transferred to the burn unit at Hamilton Health Sciences for surgery.

There, Dr. Marc Jeschke opted for a world-first treatment strategy of using exosomes to heal the burns rather than covering them up. Exosomes are tiny particles released by cells that carry the signal for powerful healing responses. They are usually collected from lab cultured cells, and Jeffery's burns were so bad she needed a trillion of them.