Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Schematic diagram of a cross-section of the ciliary axoneme with nine microtubule doublets surrounding the central pair of microtubules. The microtubules are interconnected via radial spokes, a nexin-dynein regulatory complex, and dynein arms.
