Answer
Whole blood contains everything (i.e, WBC & RBC contained in plasma, serum, etc.) Plasma contains the blood cells. Serum is a component of clotted blood. It is the whole part not including clot.
Work Step by Step
Whole blood contains everything (i.e, WBC & RBC contained in plasma, serum, etc.) Plasma contains the blood cells. Serum is a component of clotted blood. It is the whole part not including clot.