An umbilical cord blood match can be made in as few as three or four days, which can spell life or death for someone who is already immunodeficient and at high risk for a fatal infection.

• 而且，它的配对检验只要三到四天就能完成，这对某些免疫缺陷或有致命感染危险的病人而言，可是攸关生死。