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Compressed gases or vapors in a container which, upon release of pressure and expansion through a valve, carry another substance from the container. …

Analogs of those substrates or compounds which bind naturally at the active sites of proteins, enzymes, antibodies, steroids, or physiological recept…

A substance that makes particles (such as bacteria or cells) stick together to form a clump or a mass.

Chemicals used in agriculture. These include pesticides, fumigants, fertilizers, plant hormones, steroids, antibiotics, mycotoxins, etc.

Any substance in the air which could, if present in high enough concentration, harm humans, animals, vegetation or materials. Substances include GASE…

Toxic air-borne matter related to work performed They are usually produced by the specific nature of the occupation.

Substances interfering with the metabolism of ethyl alcohol, causing unpleasant side effects thought to discourage the drinking of alcoholic beverage…

Highly reactive chemicals that introduce alkyl radicals into biologically active molecules and thereby prevent their proper functioning. Many are use…