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Definition of Interleukin-4

Interleukin-4: A protein that stimulates the immune system to develop mast cells, resting T-cells, and activated B-cells. Abbreviated IL-4.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=11523
Last Editorial Review: 12/10/2003

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