Only a few windpipe , or trachea , transplants have ever been done . Transplant given to Claudia Castillo , a 30-year-old Colombian mother of two . Woman 's stem cells used to create cartilage , tissue cells to cover new windpipe . Four days after putting Castillo 's stem cells into the donor trachea , the team was able to perform the transplant operation at the Hospital Clinic in Barcelona . She was born with an undescended larynx and trachea, which means she has no voice at all.
Only a few windpipe , or trachea , transplants have ever been done . Transplant given to Claudia Castillo , a 30-year-old Colombian mother of two . Woman 's stem cells used to create cartilage , tissue cells to cover new windpipe . She was born with an undescended larynx and trachea, which means she has no voice at all.