Umbilical cords provide vital hematopoietic stem cells for blood cancers and...

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

Umbilical cords provide vital hematopoietic stem cells for blood cancers and mesenchymal stem cells for tissue repair. Because these cells lose potency quickly, clinicians must collect them immediately after birth. This overview explains why.