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.
aster (plural asters) ( 1 obsolete) A star. 1603, Michel de Montaigne; John Florio, transl., Essayes, London: Edward Blount, OCLC 946730821: , Folio Society, 2006, vol.1, p.94: by the changes and enter-caprings of which, the revolutions, motions, cadences, and carrols of the asters [transl. astres] and planets are caused and transported.