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Today's Terms
Tremolite
Definition:
Tremolite may occur in fibrous form (an asbestos). It is not used commercially in the United States, but is a common impurity in chrysotile asbestos and vermiculite mined from deposits in Libby, Montana.
Lethal Concentration(50) (LC50)
Definition:
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.
Mesothelioma
Definition:
A rare malignant tumor of the lung membrane which lines the chest and abdominal cavity. Malignant mesothelioma is a cancerous tumor of the pleura (lining of the lung and chest cavity) or peritoneum (lining of the abdomen) that is almost always caused by sustained exposure to asbestos.
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