antibody
AN-tee-bah-dee
/ˈæntiˌbɑːdi/
A protective Y-shaped protein produced by the immune system that specifically recognizes and neutralizes foreign invaders.
Focuses on the targeted biological defense protein generated in response to an infection or vaccine.
The story behind the word. Coined in the late 19th century as a translation of Paul Ehrlich's German term 'Antikörper'. Ehrlich hypothesized that cells had specific chemical side-chains that bound to toxins like keys in locks, calling these defensive structures 'against-bodies'.
Word relationships
- immunoglobulin: Immunoglobulin is the formal chemical and biochemical term for the protein class, whereas antibody emphasizes its target-specific defensive function.
- antigen: An antigen is the foreign agent or marker that triggers the production of an antibody.
Commonly confused with
- antibiotic: An antibody is an internal protein created naturally by B cells, whereas an antibiotic is a medication given externally to destroy bacteria.
Word family
- antibodies (noun): Plural form of antibody
Collocations
- neutralizing antibody
- monoclonal antibody
- antibody titer
- antibody response
Example sentences
- "The patient developed a robust antibody response within two weeks of receiving the second dose of the vaccine." Medical research context
- "Monoclonal antibody therapies have revolutionized oncology and rheumatology over the past two decades." Scientific literature citation
Memory hook
Think of an antibody as your body's anti-bodyguards patrolling the bloodstream to arrest toxic trespassers. Body's anti-invader guard
When not to use
Do not confuse with 'antibiotic', which is a pharmaceutical drug designed to kill bacteria.
Fun facts
- A single B cell can secrete thousands of antibody molecules per second during an active infection.
- Monoclonal antibodies are cloned from a single parent cell to target exact surface receptors on cancer cells.
Explore more words
vaccine, inoculation, protein, inoculate, prophylactic, enzyme
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