keratin pearl

См. также в других словарях:

• pearl — 1. A concretion formed around a grain of sand or other foreign body within the shell of certain mollusks. 2. One of a number of small tough masses, such as mucus occurring in the sputum in asthma. 3. SYN: keratin p …   Medical dictionary

• pearl — pearl1 pearler, n. pearlish, adj. pearllike, adj. /perrl/, n. 1. a smooth, rounded bead formed within the shells of certain mollusks and composed of the mineral aragonite or calcite in a matrix, deposited in concentric layers as a protective… …   Universalium

• carcinoma — Any of various types of malignant neoplasm derived from epithelial cells, chiefly glandular (adenocarcinoma) or squamous (squamous cell c.); the most commonly occurring kind of cancer. [G. karkinoma, fr. karkinos, cancer, + oma, tumor] Like other …   Medical dictionary

• nest — A group or collection of similar objects. SEE ALSO: nidus. [A.S.] Brunn n. glandlike invagination of surface transitional epithelium in the epithelium of the lower urinary tract. cell n. a small …   Medical dictionary

• skin — skinlike, adj. /skin/, n., v., skinned, skinning, adj. n. 1. the external covering or integument of an animal body, esp. when soft and flexible. 2. such an integument stripped from the body of an animal, esp. a small animal; pelt: a beaver skin.… …   Universalium

• Cyst — A closed sac or capsule, usually filled with fluid or semisolid material. * * * 1. A bladder. 2. An abnormal sac containing gas, fluid, or a semisolid material, with a membranous lining. SEE ALSO: pseudocyst. [G. kystis, bladder] adventitious c.… …   Medical dictionary

• milium — A tiny subepidermal keratinous cyst, usually multiple and therefore commonly referred to in the plural. M. may be primary (developmental), occurring predominantly on the face in infants and adults, or retention cysts secondary to causes of… …   Medical dictionary

• Shark — Taxobox name = Shark fossil range = Late Devonian Recent image width = 250px image caption = Grey reef shark, Carcharhinus amblyrhynchos regnum = Animalia phylum = Chordata subphylum = Vertebrata classis = Chondrichthyes subclassis =… …   Wikipedia

• Proceedings of the National Academy of Sciences — Infobox Journal title = Proceedings of the National Academy of Sciences discipline = All sciences abbreviation = PNAS , Proc Natl Acad Sci USA language = English publisher = National Academy of Sciences editor = Randy Schekman country = USA… …   Wikipedia

• Ceramic engineering — Simulation of the outside of the Space Shuttle as it heats up to over 1,500 °C (2,730 °F) during re entry into the Earth s atmosphere Ceramic engineering is the science and technology of creating objects from inorganic, non metallic… …   Wikipedia