+Allergens are substances that ignite an unexpected immune response in certain individuals. Though often benign to most, these triggers can lead to an [Allergy](/wiki/allergy), sometimes escalating to a severe [Anaphylaxis](/wiki/anaphylaxis).
+## See also
+- [Immunity](/wiki/immunity)
+- [Hypersensitivity](/wiki/hypersensitivity)
+- [Histamine](/wiki/histamine)
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