Melanin pigmentation.
D005123:Eye / Q000378:metabolism; D005260:Female; D006652:Histological Techniques; D006801:Humans; D008297:Male; D008543:Melanins / Q000096:biosynthesis*; D008854:Microscopy, Electron; D008974:Mollusca / Q000502:physiology; D010858:Pigmentation / Q000502:physiology*; D010859:Pigmentation Disorders / Q000201:enzymology; D044469:Racial Groups; D012160:Retina / Q000166:cytology; D014444:Tyrosine Transaminase / Q000378:metabolism
D008543:Melanins; D014444:Tyrosine Transaminase