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.
Histogram of vector shift distribution with respect to time. Time is broken into 4 time points, 0–4 min (blue), 5–9 min (red), 10–14 min (green), and greater than 15 min (purple). Left: ERB. Right: GEL. Due to the 0.2 cm fiducial expansion, shifts less than 0.2 cm were recorded as zero shifts.
