Umbilical cord blood provides HSCs for transplants, while cord tissue contains...

https://emedicodiary.com/post/2217/from-birth-to-bedside-how-umbilical-cord-stem-cells-are-changing-modern-medicine

Umbilical cord blood provides HSCs for transplants, while cord tissue contains MSCs for tissue repair. We collect these cells immediately after birth because the window is narrow. Storing them preserves a unique asset for future medical needs.