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 representation of the directed auxin flux along a linear vein with the auxin gradient (A) and against the auxin gradient (B). α/β gives the background auxin concentration. The sizes of the blue boxes are proportional to auxin concentration.
