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

https://zulu-wiki.win/index.php/Understanding_CAR_T-Cell_Therapy_and_the_Role_of_Umbilical_Cord_Derivatives_in_Modern_Hematology

Umbilical cord blood provides hematopoietic stem cells, while cord tissue offers mesenchymal cells. Both support vital medical research. Since these cells degrade quickly after birth, immediate collection remains essential for viability.