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.
Characterization of diatom polyamines. Electrospray ionization/MS analysis of purified polyamine fractions. Each peak represents a singly charged positive ion. Selected peaks are marked by their m/z units. (A) C. fusiformis polyamines. (B) C. didymum polyamines. (C) N. angularis polyamines.
