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endocrine signaling. Signaling in which endocrine cells release hormones that act on distant target cells.
Some compounds can act in two or even three types of cell-to-cell signaling. Certain small amino acid derivatives, such as epinephrine, function both as. neurotransmitters (paracrine signaling) and as systemic hormones (endocrine. signaling). Some protein hormones, such as epidermal growth factor (EGF), are.