| Answer | Crossword Clue |
|---|---|
| RHNEGATIVE | Like the blood type of "universal donors" |
| OPOSITIVE | Universal donor's blood type |
| ONEG | Universal donor's blood type, briefly |
| ONEG | Universal donor's blood type, for short |
| OTYPE | Like universal blood donors |
| TYPEO | Like a universal donor's blood |
