Umbilical cord blood provides hematopoietic stem cells for treating blood...

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

Umbilical cord blood provides hematopoietic stem cells for treating blood disorders. Cord tissue yields mesenchymal stem cells for regenerative research. You must collect these cells immediately after birth as their viability drops fast