Related Clues:
- ___ Negative
- Rare blood designation
- Like universal blood recipients
- Blood bank spec
- Blood group known as the universal donor
- Common bank deposit
- Like universal recipients
- Universal recipient's category
- Category at a blood bank
- Alternative to O
- In-demand blood group
- Like the blood of a universal donor
- Universal donor's blood group
- Universal blood recipient's designation
- Designation for a universal donor