ONEGATIVE
| Date | Clue |
|---|---|
| 2017-11-26 | Blood type of a "universal donor" |
| 2010-04-12 | So-called universal donor blood |
| 2009-03-25 | Blood type historically considered the universal donor |
| 2004-01-23 | It's rarely found in the hospital |
| Date | Clue |
|---|---|
| 2017-11-26 | Blood type of a "universal donor" |
| 2010-04-12 | So-called universal donor blood |
| 2009-03-25 | Blood type historically considered the universal donor |
| 2004-01-23 | It's rarely found in the hospital |