Umbilical cord blood provides hematopoietic stem cells, while cord tissue...

https://magic-wiki.win/index.php/The_Science_of_Natural_Killer_Cells_and_Banking:_A_Clinical_Perspective

Umbilical cord blood provides hematopoietic stem cells, while cord tissue yields mesenchymal stem cells. Clinicians collect these samples immediately after birth because cell viability drops rapidly