does serum contain cells
Plasma and serum are both found in blood. Blood contains the red blood cells (RBC), the platelets, the white blood cells (WBC), and several other important substances, including electrolytes, fibrinogen, hormones, and antibodies. These are all suspended in the fluid portion of the blood, which is the plasma.
Plasma is the liquid component of blood after all of the cells and platelets are removed; serum is plasma after coagulation factors have been removed. Learning Objective. Explain the structure and function of plasma and serum.