Examlex
The reticular formation (RAS) can become selective and learn to filter out certain sounds and be more sensitive to other sounds.
Microorganisms
Microscopic organisms that include bacteria, viruses, fungi, and protozoa.
Offensive
Causing upset or harm; often relating to behavior or material that is rude or attacking.
Allergies
A condition in which the immune system reacts abnormally to a foreign substance.
Nausea
A feeling of unease and discomfort in the stomach with an urge to vomit.
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