Dalibor Stys asked:
Are [polyamines] present in algae or cyanobacteria?
Hamana & Matsuzaki respond in their review [Polyamines as a Chemotaxonomic
Marker in Bacterial Systematics. Crit Rev Microbiol (1992) 18:261-283]:
Cyanobacteria comprise two types; one group contains homospermidine and
the other spermidine.
