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.
Example force clamp measurement of a nucleosome array. (a) Extension vs. time of nucleosome array at a constant force of 9.2 pN, measured using the method described in the text. (b) The force as a function of time showing the variation following each unwinding event.
