Animal dander

Animal Dander
Tiny scales of animal skin, a common indoor air pollutant.
Animal Studies ...

Allergen: A chemical or biological substance (e.g., pollen, animal dander, or house dust mite proteins) that induces an allergic state or reaction, characterized by hypersensitivity. A substance that induces allergic reaction.

See also: Cancer, Toxic substance, Stack, Absorption, Population