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.
Typical positive TOF-SIMS spectra of C. japonica xylem. The spectra were obtained from the earlywood areas of heartwood (A) and sapwood (B). Two peaks of m/z 285 and 301 generated from ferruginol were detected in the heartwood but not in the sapwood. Note that the chemical structure of ferruginol is indicated in (A).
