serum

(redirected from serums)
Also found in: Dictionary, Thesaurus, Medical.

serum:

see bloodblood,
fluid pumped by the heart that circulates throughout the body via the arteries, veins, and capillaries (see circulatory system; heart). An adult male of average size normally has about 6 quarts (5.6 liters) of blood.
..... Click the link for more information.
.

Serum

The liquid portion that remains when blood is allowed to clot spontaneously and is then centrifuged to remove the blood cells and clotting elements. It has approximately the same volume (55%) as plasma and differs from it only by the absence of fibrinogen. See Fibrinogen

Blood serum contains 6–8% solids, including macromolecules such as albumin, antibodies and other globulins, and enzymes; peptide and lipid-based hormones; and cytokines; as well as certain nutritive organic materials in small amounts, such as amino acids, glucose, and fats. Somewhat less than 1% of the serum consists of inorganic substances. Small amounts of respiratory gases are dissolved in the serum, as is the gas nitric oxide, which serves as a chemical messenger and vasodilator. Small amounts of waste material are also present. These substances, along with other small molecules which are not bound to blood proteins, are filtered out as blood flows through the kidney. See Blood, Kidney

Certain types of sera, both human and animals, are used in clinical medicine. Immune serum and hyperimmune serum either are developed by naturally occurring disease or are deliberately prepared by repeated injection of antigens to increase antibody titer for either diagnostic tests or the treatment of active disease. These sera are referred to as antisera, since they have a specific antagonistic action against specific antigens. See Antibody, Antigen, Biologicals, Immunity

By custom, the clear portion of any liquid material of animal origin separated from its solid or cellular elements is also referred to as sera. These fluids are more properly referred to as effusions. See Serology

serum

[′sir·əm]
(physiology)
The liquid portion that remains when blood clots spontaneously and the formed and clotting elements are removed by centrifugation; it differs from plasma by the absence of fibrinogen.

serum

1. See blood serum
2. antitoxin obtained from the blood serum of immunized animals
3. Physiol zoology clear watery fluid, esp that exuded by serous membranes
References in periodicals archive ?
The launch of No7 Protect & Perfect ADVANCED and No7 Protect & Perfect Intense ADVANCED Serums has been incredibly successful in the UK with one sold every 8 seconds.
BOTTLE BROWSING Just as you choose a moisturiser according to your skin type, serums aren't a one-fits-all product.
No 7 Protect and Perfect Intense Beauty Serum pounds 20.
leading hair growth formula), Shen Min Activator Serum is available
Whether redness is caused by rosacea, allergies, or sensitive skin, AntiRedness Calming Serum can help make the flushing disappear.
Once you start noticing these signs, look for peptideloaded serums, which also contain antioxidants such as vitamins A, C and E, coenzyme Q10 and targeted ingredients such as renovage that work on the cells' DNA to help defend and repair.
John Frieda caused a revolution when he launched his hair serums 20 years ago.
She tested the new serums available in the market for a period of three weeks and then asked Ms.
These ultra-luxurious serums target and address the root causes of the signs of aging, delivering results on every layer of the skin.
Launch of Omni Bio Solutions' Newest Serum, Eyelash And Brow Vital Growth Serum, selected for Walmart contest
Most currently marketed anti-aging serums offer individual or combinations of vitamins A, B, C, D and E.