cytokine
noun/ˈsaɪtoʊkaɪn/
Frequency rank: #17,549 most common English word
Meaning
A small protein secreted by cells that regulates immune responses and cell signaling.

Example sentence
During an infection, the immune system releases cytokine to help coordinate the body's response to pathogens.
Synonyms & related words
- immunomodulator
- mediator
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