Biochemical correlates with phyletic division of the nervous system.
D000818:Animals; D001001:Anura; D005075:Biological Evolution; D002415:Cats; D004285:Dogs; D004298:Dopamine / Q000378:metabolism*; D004837:Epinephrine / Q000378:metabolism*; D005399:Fishes; D006041:Goats; D006801:Humans; D009417:Nerve Tissue / Q000378:metabolism*; D009638:Norepinephrine / Q000378:metabolism*; D012756:Sheep; D013552:Swine
D004298:Dopamine; D009638:Norepinephrine; D004837:Epinephrine