The methane clouds of Uranus are found low in the atmosphere. The methane clouds are the only clouds to be found on Uranus, but there are hazes of smog high in the atmosphere. The diagram shows that the...more
PDL Laser. Pulsed dye laser (PDL) is a laser often used to treat conditions or spots on the skin that are vascular in nature. PDL is commonly used to treat redness and telangectasias (broken blood vessels) associated with rosacea.PDL is also used to treat telangectasias resulting from chronic sun damage, or hereditary causes.DL Laser. Pulsed dye laser (PDL) is a laser often used to treat conditions or spots on the skin that are vascular in nature. PDL is commonly used to treat redness and telangectasias (broken blood vessels) associated with rosacea.
Periodontal Ligament. The periodontal ligament (PDL) is a lining around the root of the tooth. It absorbs the shock of chewing, and holds the tooth firmly in place. Cells in the periodontal ligament can degenerate and regenerate. Periodontal Ligament Seen in Blue. The condition of a worn out tooth ligament is called chronic peridontitis and is a primary cause of tooth loss.