+Signaling pathways are the intricate molecular routes cells use to sense and respond to their environment. A [Signal](/wiki/signal) binds to a [Receptor](/wiki/receptor), initiating a cascade of interactions that transform external cues into precise cellular actions.
+## See also
+- [Cell Communication](/wiki/cell_communication)
+- [Gene Expression](/wiki/gene_expression)
+- [Protein Kinase](/wiki/protein_kinase)
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