Hypersensitivity pneumonitis involves inhalation of an antigen. This leads to an exaggerated immune response (hypersensitivity). Type III hypersensitivity and type IV hypersensitivity can both occur depending on the cause. Diagnosis. The diagnosis is based upon a history of symptoms after exposure to the allergen and clinical tests.
Whitewater definition, of or moving over or through rapids: whitewater rafting down the Colorado River. See more.
FRESH'ES, n. 1. The mingling of fresh water with salt water in rivers or bays, or the increased current of an ebb tide by means of a flood of fresh water, flowing towards or into the sea, and discoloring the water. 2. A flood; an overflowing; an inundation; a freshet.