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The figure below shows how differential centrifugation can be used to isolate four subcellular fractions. Which fraction corresponds to the membrane fraction?
Point Source
In environmental science, a single, identifiable source of pollution, such as a pipe or smokestack, that releases pollutants into the environment.
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An official document giving someone authorization to do something.
Toxic Substances Control Act
A United States law enacted in 1976 that gives the Environmental Protection Agency authority to regulate the manufacture and sale of chemicals.
Industrial Chemicals
Chemical substances manufactured for use in industrial processes or products, distinct from pharmaceuticals, agricultural chemicals, or food additives.
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