serum

The clear yellowish fluid obtained upon separating whole blood into its solid and liquid components after it has been allowed to clot.

Blood serum from the tissues of immunized animals, containing antibodies and used to transfer immunity to another individual.

Watery fluid from animal tissue, such as that found in edema.

Whey.

The blood-serum of an animal which has been rendered immune against some disease by injections of increasing quantities of the micro-organism of such disease; antitoxin. See serum diagnosis and immunity, 5.

An antidiphtheritic serum.

The thin part of milk separated from the curd and oil; whey. Also called serum lactis.

The clear pale-yellow liquid which separates from the clot in coagulation of the blood; blood-serum.

Any serous liquid, as chyle or lymph.

The watery portion of certain animal fluids, as blood, milk, etc.