Which Example Illustrates How a Paracrine Signal Functions in the Human

Multiple Choice

Which example illustrates how a paracrine signal functions in the human body?

A) Cells in the thyroid secrete a chemical signal that stimulates the adrenal cortex near the kidneys to secrete another chemical signal.
B) A cell in a developing embryo has a cell surface protein that directly contacts a receptor on a neighboring cell, causing it to change its gene expression pattern.
C) When the skin is injured, chemical signals are sent from nearby blood cells to aid in healing.
D) T lymphocytes secrete a chemical signal that self-stimulates those same T lymphocytes to undergo cell division.
E) A cancer cell secretes a chemical signal that binds to receptors on the same cancer cell, stimulating the cell to begin replicating its DNA.