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.
Light micrographs showing the cambial zone on 1 February 2012. The transverse view (A) and radial view (B) show that, in the cambium, there were no new thin cell plates and cells were arranged compactly. Thus, the cambium was dormant. Ph, phloem; Ca, cambium; Xy, xylem. Scale bars = 50 μm.
