1. Cerium is used as a chemical simulant of plutonium for development of containment, extraction, and other technologies.

2. Some of the bacteria and actinomycetes isolated from this lake are able to grow on some components of inorganic medium containing martian soil simulant components.

3. Then, to simplify these analyses, testers usually replace the foodstuffs by legally prescribed food simulants such as olive oil and mixtures of water with acetic acid or alcohol.

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