title: The presence of melanocytes in the nasal cavity.
mesh_terms: D000328:Adult; D044383:Black People; D002648:Child; D006801:Humans; D008544:Melanocytes / Q000166:cytology*; D008545:Melanoma / Q000473:pathology; D009297:Nasal Mucosa / Q000166:cytology / Q000473:pathology; D009666:Nose / Q000166:cytology* / Q000473:pathology; D009669:Nose Neoplasms / Q000473:pathology; D012834:Silver; D013194:Staining and Labeling; D014420:Turbinates / Q000166:cytology; D044465:White People
chemical_list: D012834:Silver