in taxon cilium movement epithelial cilium movement involved in extracellular fluid movement https://github.com/geneontology/go-ontology/issues/17181 GO:0003351 2009-12-03T10:08:25Z epithelial cilium beating dph cilium movement involved in fluid flow The directed, self-propelled movement of cilia of epithelial cells. Depending on the type of cell, there may be one or many cilia per cell. This movement is usually coordinated between many epithelial cells, and serves to move extracellular fluid. extracellular transport microtubule-based transport Eukaryota