Umbilical cords contain two unique stem cell types: blood-based HSCs for...

https://astro-wiki.win/index.php/What_does_it_mean_that_cord_blood_has_lower_MHC_antigen_density%3F

Umbilical cords contain two unique stem cell types: blood-based HSCs for transplants and tissue-resident MSCs for repair. Collecting these cells immediately after delivery remains essential, as timing determines both the quality and quantity of the sample