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.
Force (in nN) exerted by the probe tip on the magnetic bead determined by the traction force exerted by the magnetic bead on the PAA gel as a function of the distance between the probe tip and magnetic bead (in μm). Error bars indicate ± standard deviation from two independent experiments.
