| Answer | Crossword Clue |
|---|---|
| SPLEENS | They help remove red blood cells |
| MARROW | Source of red blood cells |
| ANEMIA | Deficiency of red blood cells |
| OXYGENATE | Refuel, as red blood cells |
| ANEMIAS | Deficiencies of red blood cells |
| ANEMIA | Deficiency in red blood cells |
| HEME | Pigment in red blood cells |
