Before revision: In a great many of the contexts in which groups of cilia or flagella are found they exhibit synchronized behavior . This includes phase-locking , as seen in Chlamydomonas flagella {\it  , and metachronal wave formation in the ciliary arrays of Paramecium or in the respiratory cilia of URLanisms.
After revision: In a great many of the contexts in which groups of cilia or flagella are found they exhibit synchronized behavior ; this includes phase locking , as seen in Chlamydomonas flagella {\it , and metachronal wave formation in the ciliary arrays of Paramecium or in the respiratory cilia of URLanisms.