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Updated: Aug 9, 2026

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Published on: December 23, 2010
Interleukin 4/B cell stimulatory factor 1: one lymphokine, many functions
1Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20892.
This review details the broad actions of interleukin 4 (IL-4), a key T cell product. It explores how IL-4 and other lymphokines regulate immune responses in various settings.
Area of Science:
- Immunology
- Molecular Biology
Background:
- Lymphokines are crucial T cell-derived mediators.
- They regulate immune cell activation, growth, and differentiation.
- Interleukin 4 (IL-4) exhibits extensive biological activities.
Purpose of the Study:
- To review the characteristics, function, and regulation of IL-4.
- To discuss the mechanisms of T cell-derived lymphokine-mediated immune control.
Main Methods:
- Literature review of existing research on lymphokines and IL-4.
- Analysis of in vivo and in vitro studies on immune responses.
Main Results:
- IL-4 (also known as B cell stimulatory factor 1) is a pleiotropic lymphokine.
- It significantly impacts T cell and B cell populations.
- T cell-derived lymphokines orchestrate complex immune responses.
Conclusions:
- IL-4 plays a central role in immune regulation.
- Understanding lymphokine mechanisms is vital for immunology.
- T cell products are key regulators of cellular immunity.
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