Hamana, K Widespread occurrence of norspermidine and norspermine in eukaryotic algae. [electronic resource] - Journal of biochemistry Apr 1982 - 1321-8 p. digital Publication Type: Journal Article ISSN: 0021-924X Standard No.: 10.1093/oxfordjournals.jbchem.a133818 doi Subjects--Topical Terms: Chromatography, Paper--methodsEukaryota--analysisSpermidine--analogs & derivativesSpermine--analogs & derivatives