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.
MS/MS analysis of m/z 337.19. (A) Catharanthine standard (LC-MS). (B) Catharanthine standard (infusion). (C) Tabersonine standard (LC-MS). (D) Tabersonine standard (infusion). (E) IC sample (Single-cell MS). (F) LC sample (Single-cell MS). (G) PC (Single-cell MS). (H) EC (Single-cell MS). (I) Stem sample m/z 337.19 specific MS/MS fragment (infusion measurement).
