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Biological Agents

"Biological Agents" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

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Organisms or complex pharmaceutical substances, preparations, or agents of organic origin, usually obtained by biological methods or assay. Biological agents are differentiated from BIOLOGICAL FACTORS in that the latter are compounds with biological or physiological activity made by living organisms. (From Webster's 3d ed).


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This graph shows the total number of publications written about "Biological Agents" by people in this website by year, and whether "Biological Agents" was a major or minor topic of these publications.
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