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antimicrobial agent
A substance that kills or slows the growth of microorganisms, including bacteria, viruses, fungi and protozoans.
metabolite
Any intermediate or product resulting from metabolism. The term 'metabolite' subsumes the classes commonly known as primary and secondary metabolites.
mutagen
An agent that increases the frequency of mutations above the normal background level, usually by interacting directly with DNA and causing it damage, including base substitution.
antibacterial agent
A substance (or active part thereof) that kills or slows the growth of bacteria.
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antineoplastic agent
A substance that inhibits or prevents the proliferation of neoplasms.
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