title: Underpigmentation of the substantia nigra in chronic disease in children.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001344:Autopsy; D001927:Brain Diseases / Q000473:pathology*; D002648:Child; D002908:Chronic Disease; D006801:Humans; D010860:Pigments, Biological; D013378:Substantia Nigra / Q000473:pathology*
chemical_list: D010860:Pigments, Biological