A (chemical substance) may undergo a use.Logical formLearned from7 sentences. A religious-leader may undergo a substance.Logical formLearned from7 sentences. A substance can be distinct from a body.Logical formLearned from7 sentences. (Substance abuse) may undergo integration.Logical formLearned from7 sentences. Substances may contain a chemical.Logical formLearned from7 sentences. Agency can be for toxic substances.Logical formLearned from7 sentences. A substance can be in humans.Logical formLearned from7 sentences. Persons may be exposed to toxic substances.Logical formLearned from7 sentences. Exposure can be to a hazardous substance.Logical formLearned from7 sentences. Research can be with controlled substances.Logical formLearned from7 sentences. (Drug substances) may be used in compounding.Logical formLearned from7 sentences. An amount of hazardous substance may exceed limits.Logical formLearned from7 sentences. Children may be affected by (substance abuse).Logical formLearned from7 sentences. Proportions may pertain-to substances.Logical formLearned from7 sentences. A challenge may undergo a substance.Logical formLearned from7 sentences.