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.
Diagrammatic representation of plasmodesmatal frequencies in an intermediate vascular bundle of a sink barley leaf. Values are expressed as number of plasmodesmata per micrometer of shared wall interface. BS, Bundle sheath cell; C, companion cell; MS, mestome sheath cell; S, thin-walled sieve tube; TS, thick-walled sieve tube; X, xylem.
