Across
- 2. connective tissue made of cells in a fluid matrix
- 7. % of red blood cells in a test
- 8. substances the body recognizes as foreign
- 10. structure separating the two sides of the heart
Down
- 1. begins the process of forming a blood clot
- 3. white blood cells
- 4. hollow, muscular organ about the size of the fist located between the lungs
- 5. the fluid matrix
- 6. the process of blood cell formation
- 9. red blood cells