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.
Â§329.4 General definition. Navigable waters of the United States are those waters that are sub-ject to the ebb and flow of the tide and/ or are presently used, or have been used in the past, or may be susceptible for use to transport interstate or for-eign commerce. A determination of navigability, once made, applies lat-