After initial injection, pigment is dispersed throughout a damaged layer down through the epidermis and upper dermis, in both of which the presence of foreign material activates the immune system's phagocytes to engulf the pigment particles. [wikipedia]
"Blue and white wares" (Chinese: 青花; pinyin: qīng-huā; literally "Blue flowers") designate white pottery and porcelain decorated under the glaze with a blue pigment, generally cobalt oxide. [wikipedia]
