Vol. 172 No. 5, February 27, 2006. Pages 663–669.

Due to an error during the production process, the terms “kinesin II” and “kinesin 2” were transposed within a sentence in the Introduction. The corrected portion of the sentence appears below.

“In C. elegans amphid channel cilia, however, two kinesin 2 motors, heterotrimeric kinesin II and homodimeric OSM-3 kinesin, cooperate in a semiredundant fashion to build two distinct domains of the axoneme:”

This error appears only in the printed version of this article and in pdf versions downloaded on or before 02/23/2006. The html version is correct, and any pdf version of this article downloaded after 02/23/2006 is also correct.