tissue 5-hydroxyindoleacetic acid amount midbrain/pons 5-hydroxyindoleacetic acid amount 2019-10-30T14:20:53Z CMO:0003111 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 indole-3-acetic acid substituted by a hydroxy group at C-5. Trait.ontology VT:0010852 caripark brain 5-hydroxyindoleacetic acid amount