| A | B |
| plasma | liquid portion of the blood |
| red blood cells | cells specialized to carry oxygen |
| hemoglobin | molecule made of protein and iron; helps blood carry oxygen |
| white blood cells | cells that protect the body from pathogens |
| platelets | cell fragments involved in blood clotting |
| red blood cells | also called erythrocytes |
| white blood cells | examples include B-cells and T-cells |
| centrifuge | instrument used to separate blood components |
| blood type | determined by proteins on the surface of blood cells |
| cholesterol | lipid molecule found in the blood |