The nature of possible underlying disease states including cancer or infections can often be detected by microscopically visualizing cytological changes in cells which are exfoliated and captured by fluid extraction from body cavity, brushings, washings, or fine needle aspirations.
Cloister definition, a covered walk, especially in a religious institution, having an open arcade or colonnade usually opening onto a courtyard. See more.
cleat. 1  a wedge-shaped block fastened to a surface to serve as a check or support: He nailed cleats into the sides of the bookcase to keep the supports from slipping. 2  a strip of metal, wood, or the like, fastened across a surface, as a ramp or gangway, to provide sure footing or to maintain an object in place.