serum

IPA: sˈɪrʌm

Blood serum used as a blood product, in the practice of medicine: blood serum from the tissues of immunized animals (human or nonhuman), containing antibodies and used to transfer immunity to another individual (human or nonhuman).
A watery liquid from animal tissue, especially one that moistens the surface of serous membranes or that is exuded by such membranes when they become inflamed, such as in edema or a blister.
The watery portion of certain other animal fluids, such as milk; whey.
(skincare) A skincare product of varying consistencies with a high concentration of one or more active ingredients, for a targeted purpose, such as preventing acne, repairing sun damage, or moisturizing.
Ellipsis of blood serum. [(biology, medicine) The portion of whole blood that is not blood cells and not clotting factors; it can be separated as a clear yellowish liquid after the blood has been allowed to clot.]

Examples of "serum" in Sentences

They are mixed and the serum is digested with papain.
Fetal bovine serum is used in the manufacture of vaccines.
Doctors helicoptered antivenin serum in from the National Zoo.
Fetal bovine serum is a naturally filtered source of growth factors.
Fetal bovine serum is obtained from fetal blood, and blood is not a source of infection with prions.
Fetal bovine serum is highly diluted and eventually removed from cells during the growth of vaccine viruses.
Therefore the difference in serum levels of the two fats after an oral dose will reflect pancreatic-based fat malabsorption.
They made what they called a serum, which they put into a man's body and which killed the pantoblast germs without killing the man.