Definitions for: Serum


[n] watery fluid of the blood that resembles plasma but contains fibrinogen



Webster (1913) Definition: Se"rum (s[=e]"r[u^]m), n. [L., akin to Gr. ???, Skr.
s[=a]ra curd.] (Physiol.)
(a) The watery portion of certain animal fluids, as blood,
milk, etc.
(b) A thin watery fluid, containing more or less albumin,
secreted by the serous membranes of the body, such as the
pericardium and peritoneum.

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.

Synonyms: blood serum

See Also: antiserum, blood, bodily fluid, body fluid, humor, humour, liquid body substance, milk whey, opsonin, serum albumin, serum globulin, whey

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