| NOUN | substance | cytokine | any of various protein molecules secreted by cells of the immune system that serve to regulate the immune system |
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| Meaning | Any of various protein molecules secreted by cells of the immune system that serve to regulate the immune system. | |
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| Narrower | lymphokine | A cytokine secreted by helper T cells in response to stimulation by antigens and that acts on other cells of the immune system (as by activating macrophages) |
| tumor necrosis factor, tumour necrosis factor, TNF | A proinflammatory cytokine that is produced by white blood cells (monocytes and macrophages) | |
| Broader | protein | Any of a large group of nitrogenous organic compounds that are essential constituents of living cells |
| Spanish | citocina | |
| Catalan | citocina | |
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