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(Science: pharmacology) Any nondrug material that can be used to treat, enhance, or replace any tissue, organ, or function in an organism.

also refers to biologically derived material that is used for its structural rather than its biological properties, for example, using collagen, the protein found in bone and connective tissues, as a cosmetic ingredient.

carbohydrates modified with biotechnological processes have been used as lubricants for biomedical applications or as bulking agents in food manufacture.