tissue serotonin amount midbrain/pons serotonin amount CMO:0003110 The proportion, quantity or volume in the midbrain (the middle of the three cerebral vesicles of the embryo or the corresponding part of the adult brain) and neighboring pons (between the medulla oblongata and the midbrain) of a monoamine neurotransmitter derived primarily from tryptophan. caripark 2019-10-30T14:52:55Z Trait.ontology VT:0010862 brain serotonin amount