+**Secretion** is the process by which a [cell](/wiki/cell) or [gland](/wiki/gland) releases specific substances. These substances, like hormones or enzymes, are produced for a particular physiological function within an organism.
+## See also
+- [Excretion](/wiki/excretion)
+- [Hormone](/wiki/hormone)
+- [Enzyme](/wiki/enzyme)
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