Reduction in beat rate caused by disruption of dhc9 expression. This movie was acquired at 250 frames/second. The portion shown here is 102 frames or 408 msec. The cilia can be seen to beat 4-5 times in this period corresponding to a beat rate of about 9 to 12 Hz. Cilia length and beat waveform is not different from wildtype cilia.

Quicktime movie by Albrecht Kramer-Zucker