interleukin-4

(redirected from B-cell differentiating factor)
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interleukin-4

[‚in·tər′lük·ən ′fȯr]
(immunology)
A cytokine that is capable of a variety of activities, such as induction of proliferation by T cells, mast cells, megakarocytes, and erythroid precursors; induction of antibody secretion by B cells; and potentiation of the proliferation of mast cells. Abbreviated IL-4.