1. a light glass formed on the surface of some lavas; used as an abrasive. Familiarity information: PUMICE used as a noun is very rare. â¢ PUMICE (verb) The verb PUMICE has 1 sense: 1. rub with pumice, in order to clean or to smoothen. Familiarity information: PUMICE used as a verb is very rare.
ECM of articular cartilage. -collagen (Type II) that is dispersed throughout ground substance and produces strong tensile resistance to stress-Proteoglycans (aggrecans) that form strong, permeable fiber and attracts lots of water-water and dissolved electrolytes.one 1-superficial zone where fibers are parallel to surface Zone 2-middle zone where fibers are randomly oriented Zone 3-Deep zone of cartilage where fibers are vertically oriented.
Defects created in articular cartilage that were filled with cultured chondrocytes showed significant repair tissue with features of normal articular cartilage (12). In that study, 80 percent of cartilage was reconstituted with the autologous chondrocytes, compared with only 18 percent in ungrafted controls.s a result, there may be limitations in the numbers of suitable cells that can be grown in vitro for subsequent repair of cartilage defects. Bioreactors are commonly used for large-scale expansion of cell numbers, especially for cells that grow in suspension.