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Signal Fidelity

Meaning

Signal fidelity, in the context of endocrinology and cellular biology, refers to the precision, accuracy, and clarity with which a hormonal or molecular signal is transmitted from its origin to its target receptor and ultimately translated into a correct cellular response. High fidelity ensures that the intended biological message is received without distortion or interference, leading to an appropriate physiological outcome. Loss of signal fidelity, often due to receptor downregulation or post-receptor resistance, is a hallmark of many chronic hormonal disorders, such as insulin resistance.