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Intracellular Signaling Pathways

Meaning

Intracellular Signaling Pathways are the complex, interconnected networks of molecular events that occur within a cell, allowing it to receive, process, and respond to external stimuli, such as hormones, growth factors, and neurotransmitters. These cascades of phosphorylation and dephosphorylation reactions transmit information from the cell surface to the nucleus or other organelles, ultimately dictating the cell’s function, survival, or fate. The integrity of these pathways is essential for proper endocrine function and cellular health.