Drugs may affect levels of a (brain chemical serotonin).Logical formLearned from2 sentences. Serotonin can be in axons.Logical formLearned from2 sentences. Antidepressants may affect a (brain chemical serotonin).Logical formLearned from2 sentences. An imbalance may pertain-to a (brain chemical serotonin).Logical formLearned from2 sentences. Antidepressants may reduce a level of serotonin.Logical formLearned from2 sentences. Anti-depressants may act on a level of serotonin.Logical formLearned from2 sentences. A (serotonin system) can be in a brainstem.Logical formLearned from2 sentences. An infant may have a (serotonin deficiency).Logical formLearned from2 sentences. Antidepressants may boost a release of a (neurotransmitter serotonin).Logical formLearned from2 sentences. A compound may mimic an effect of a (neurotransmitter serotonin).Logical formLearned from2 sentences. (Serotonin levels) can be low.Logical formLearned from2 sentences. A link can be between levels of serotonin.Logical formLearned from2 sentences. Some (anti-depressant drugs) may regulate (serotonin levels).Logical formLearned from2 sentences. Serotonin can be a chemical.Logical formLearned from2 sentences. A (brain chemical serotonin) may undergo a transmission.Logical formLearned from2 sentences.