{Blood serum}, the pale yellowish fluid which exudes from the
clot formed in the coagulation of the blood; the liquid
portion of the blood, after removal of the blood
corpuscles and the fibrin.
{Muscle serum}, the thin watery fluid which separates from
the muscles after coagulation of the muscle plasma; the
watery portion of the plasma. See {Muscle plasma}, under
{Plasma}.
{Serum albumin} (Physiol. Chem.), an albuminous body, closely
related to egg albumin, present in nearly all serous
fluids; esp., the albumin of blood serum.
{Serum globulin} (Physiol. Chem.), paraglobulin.
{Serum of milk} (Physiol. Chem.), the whey, or fluid portion
of milk, remaining after removal of the casein and fat.