serum

n. a liquid skin product that has a high concentration of active ingredients to help with specific problems like dryness or aging.

n. a concentrated skincare formulation designed to deliver specific active ingredients deep into the skin.

“She applies a vitamin C serum every morning before using her moisturiser.”

“Dermatologists often recommend a hyaluronic acid serum for patients with persistent skin dehydration due to its high water-retention properties.”

n. the clear, watery part of blood that remains after it has clotted.

n. the clear yellowish fluid that remains from blood plasma after the fibrinogen has been removed during clotting.

“The lab technician separated the serum from the rest of the blood sample.”

“The patient's serum was tested for specific antibodies to determine if they had developed immunity to the virus.”

Technical

n. a liquid taken from the blood of an immune animal or person, used to treat or prevent a disease.

n. an antiserum containing antibodies used to provide passive immunity against a specific pathogen or toxin.

“Doctors administered an anti-venom serum immediately after the snake bite.”

“Before the advent of modern antibiotics, researchers relied heavily on horse-derived serum to treat life-threatening bacterial infections like diphtheria.”

Technical