If any, what part of the human body is not made out of stem cells?

Question: If any, what part of the human body is not made out of stem cells?
- Keywords:
  human body,
  stem cell
Asked by anon-256944 on 11 Jun 2020.
- Alena Pance answered on 11 Jun 2020:
  
  Hi Sofia, strictly speaking all of the human body originates from stem cells because the first cells formed after the egg and sperm fuse are stem cells that differentiate into all the different cell types.

Question: If any, what part of the human body is not made out of stem cells?