pigmentary epithelium, pigmented epithelium. that made of cells containing granules of pigment. posterior epithelium. the single layer of epithelial cells on the back of the cornea, between stroma and aqueous humour; the corneal endothelium.retinal pigment epithelium. see retina.sense epithelium, sensory epithelium. see neuroepithelium (1).he single layer of epithelial cells on the back of the cornea, between stroma and aqueous humour; the corneal endothelium. retinal pigment epithelium. see retina. sense epithelium, sensory epithelium. see neuroepithelium (1).
Since at least the mid-19th century, doctors have known that silver or silver compounds can cause some areas of the skin and other body tissues to turn grey or blue-grey. Argyria occurs in people who ingest or inhale
Best Answer: You need to provide a coating on the surface of the metal to prevent its contact with the oxygen in the air. This can be done in one of several ways but the three main methods are-Select metals which form a tough resilient oxide skin preventing further oxidation (rusting) from taking place.lear Shellac is often put on cars to stop them rusting (called Diamond Coating laugh) Nail polish put onto a ring will stop it from turning your finger green or black. The idea is to prevent water and oxygen from causeing Oxidation of the metal-rust. Charles B Â· 8 years ago. Thumbs up.