[populations of thin, motile processes found covering the surface of ciliates or the free surface of the cells making up ciliated epithelium; each cilium arises from a basic granule in the superficial layer of cytoplasm; the movement of cilia propels ciliates through the liquid in which they live, and the movement of cilia on a ciliated epithelium serves to propel a surface layer of mucus or fluid. ( CSP )]
UMLS (CSP) C0008778 Relation/PAR: cell component