<unk> s are a skin condition characterized by a discoloration of the skin from embedded<unk> , usually occurring in children from accidents with firearms or firecrackers, or from a puncture wound by a pencil, which may leave a permanent black mark of embedded graphite, easily mistaken for metastatic melanoma.
Carbon stain
Giemsa stain
Wayson stain
Field stain
Feulgen stain
Romanowsky stain
Bielschowsky stain
Auramine phenol stain