In the research laboratory, you observe that B cells, cytotoxic T cells and mast cells begin to proliferate when exposed to IL-4.In this case, this effect of IL-4 may be described as

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Pleiotropy refers to the phenomenon where a single gene or molecule, such as IL-4 in this case, influences multiple different cellular or physiological processes. The fact that IL-4 affects the proliferation of B cells, cytotoxic T cells, and mast cells, which are different types of cells, is an example of pleiotropy.

In the Research Laboratory, You Observe That B Cells, Cytotoxic