Asbestosis
A progressively restrictive fibrosis of the lung and is recognized as a disabling and fatal occupational disease.

Intermediate Exposure
Exposure to a chemical for a duration of 15-364 days, as specified in the Toxicological Profiles.

Adenocarcinoma
Adenocarcinoma of the lung is a type of lung cancer. Like other cancers, adenocarcinoma is the growth of abnormal cells. These cancerous cells multiply out of control, and form a tumor. As the tumor grows, it destroys parts of the lung. Eventually, the tumor's abnormal cells can spread (metastasize) to other parts of the body, including the brain.

Anthophyllite
A type of asbestos in the amphibole group; it is also known as azbolen asbestos.

Immunologic Toxicity
The occurrence of adverse effects on the immune system that may result from exposure to environmental agents such as chemicals.

Excursion Limit (EL)
1 Fiber per cubic centimeter averaged over a 30 minute sampling period.

Malignant pleural mesothelioma
Malignant pleural mesothelioma is a type of cancer that affects the inside lining of the chest cavity. It is usually associated with asbestos exposure.

Bronchial Lung Cancer
Malignant tumor of the bronchial tubes, this disease is more common than Asbestosis & Fibrosis.

Lethal Concentration(50) (LC50)
A calculated concentration of a chemical in air to which exposure for a specific length of time is expected to cause death in 50% of a defined experimental animal population.

Asbestiform
Possessing the properties of asbestos. Minerals of specific chemical compositions can have asbestiform varieties that are fibrous in nature (e.g., crocidolite and amosite are the asbestiform varieties of the amphibole minerals, reibeckite and grunerite; tremolite and actinolite may be either asbestiform or nonasbestiform)