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Cilia in human trachea obtained from a patient who previously received tracheotomy. SEM image (A), and a captured movie frame of FITC-WGA-stained ciliary movement (B; see Movie 4 for better understanding of ciliary movement). Bars indicate 10 µm (A) and 20 µm (B). The distribution of the ciliary beat axis is shown as a rose diagram (C).
