Filtration: A slow sand filter, pressurized rapid sand filter, or pre-coat filter is the next step in treatment to filter out as many of the blue-green algae cells as possible before the water enters the disinfection system. ï Pressured rapid sand filters are the most common filters used for drinking water ponds.
Reactive urothelial cells and severe, mostly chronic inflammation. -- Urothelial cells, a type of epithelial cell found only in the urinary tract, line the urinary tract and they become reactive (changed) when injured by inflammation.
Structure and function. Urothelial tissue is highly specific to the urinary tract, and has high elasticity and trans-epithelial electrical resistance. Urothelium consists of approximately 3-5 cell layers, accompanied by a thick layer of protective glycoprotein plaques at its luminal (apical) surface, and is classified as transitional epithelium.