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Relation: subclass

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BiologicallyActiveSubstance271A Substance that is capable of inducing a change in the structure or functioning of an Organism...^
PlantSubstance47BodySubstances that are produced exclusively by Plants.^
Depressant35Any BiologicallyActiveSubstance which has the effect of depressing the central nervous system, i....^
Analgesic6An analgesic drug, also called simply an analgesic, pain reliever, or painkiller, is any member of ...^
Narcotic3Narcotic is a subclass of addictive BiologicallyActiveSubstances that have damping effects on t...^
    Opium.A substance harvested from the seed capsules of the opium poppy that contains various powerful alka...^

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