title: Investigation of the presence of chromaffin tissue in the spleen of Nandus.
mesh_terms: D000818:Animals; D002838:Chromaffin System / Q000032:analysis / Q000166:cytology*; D005399:Fishes / Q000033:anatomy & histology*; D006023:Glycoproteins / Q000032:analysis; D009638:Norepinephrine / Q000032:analysis; D013154:Spleen / Q000032:analysis / Q000166:cytology*
chemical_list: D006023:Glycoproteins; D009638:Norepinephrine