. "788558311"^^ . . . . . . "21033043"^^ . . "Staining of the nail plate"@en . "719"^^ . . . . . . . "Staining of the nail plate may occur due to nicotine, dyes (including hair dyes and nail polish), potassium permanganate, mercury compounds, hydroquinone, elemental iron, mepacrine, photographic developer, anthralin, chrysarobin, glutaraldehyde, or resorcin."@en . . . . . . "Staining of the nail plate may occur due to nicotine, dyes (including hair dyes and nail polish), potassium permanganate, mercury compounds, hydroquinone, elemental iron, mepacrine, photographic developer, anthralin, chrysarobin, glutaraldehyde, or resorcin."@en .