title: The melanins and lipofuscin.
abstract: An overview of the melanins and lipofuscin is presented, taking an integrating account of their morphological relationships and chemical characteristics wherever possible. This has required inclusion of the ommochromes, the schlerotizing process, and consideration of related neurotransmitters. A number of questions are raised and commented upon.
mesh_terms: D000818:Animals; D006801:Humans; D007668:Kidney / Q000502:physiology; D008062:Lipofuscin / Q000032:analysis / Q000378:metabolism*; D008099:Liver / Q000502:physiology; D008543:Melanins / Q000032:analysis / Q000378:metabolism*; D009799:Ocular Physiological Phenomena; D010649:Phenylalanine / Q000378:metabolism; D010860:Pigments, Biological / Q000378:metabolism*; D012879:Skin Physiological Phenomena; D013045:Species Specificity
chemical_list: D008062:Lipofuscin; D008543:Melanins; D010860:Pigments, Biological; D010649:Phenylalanine