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 drawings of various Ca 2+ -dependent changes in wave propagation of cilia and flagella and the direction of locomotion and water flow in several organisms and tissues. Red dots in Ciona sperm and Chlamydomonas flagella indicate acrosomes and mating structure (fertilization tubules), respectively. Black and gray arrows represent the direction of wave propagation and cell locomotion, respectively.
