Azure lunulae due to argyria.
D000281:Administration, Intranasal; D000368:Aged; D001129:Argyria / Q000209:etiology / Q000473:pathology*; D003116:Color; D005385:Fingers; D006801:Humans; D008297:Male; D009262:Nails / Q000473:pathology*; D012120:Respiration Disorders / Q000188:drug therapy; D012836:Silver Proteins / Q000009:adverse effects / Q000627:therapeutic use
D012836:Silver Proteins