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Endogenous Signaling Molecules

Meaning

Endogenous Signaling Molecules are chemical substances, naturally produced within the human body, that facilitate communication between cells, tissues, and organs to coordinate physiological function. This broad category includes hormones, neurotransmitters, cytokines, and various growth factors, all of which act as messengers to transmit information across biological systems. Their precise synthesis, release, and action are central to maintaining homeostasis and orchestrating adaptive responses to internal and external changes.