| Answer | Crossword Clue |
|---|---|
| OPOSITIVE | Common blood type |
| APOS | Common blood type, briefly |
| OPOSITIVE | Most common blood type |
| APOS | Common blood type: Abbr. |
| OPOSITIVETHINKER | Philosopher with the most common blood type? |
| OPOSITIVE | Most common blood type among U.S. residents |
