title: The histochemistry of the biogenic monoamines in the central nervous system of Hirudo medicinalis.
mesh_terms: D000818:Animals; D002490:Central Nervous System / Q000378:metabolism*; D006651:Histocytochemistry; D007865:Leeches / Q000378:metabolism*; D008856:Microscopy, Fluorescence; D012701:Serotonin / Q000378:metabolism*
chemical_list: D012701:Serotonin