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Il-1

Il-1 --> interleukin-1

(Science: cytokine) a soluble protein (17 kD: 152 amino acids) secreted by monocytes, macrophages or accessory cells involved in the activation of both t-lymphocytes and b lymphocytes and potentiates their response to antigens or mitogens.

Its biological effects include the ability to replace macrophage requirements for t-cell activation, as well as affecting a wide range of other cell types. at least two il-1 genes are active and alpha and beta forms of il-1 are recognised.

It is released early in an immune system response by monocytes and macrophages. It stimulates t-cell proliferation and protein synthesis. Another effect of il-1 is that it causes fever.

See: catabolin, endogenous pyrogen.

Acronym: il-1


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