Spermidine ke mofuta oa polyamine. Polyamine ke li-biomolecules tse nyane, tse mafura, tse polycationic (-NH3+). Ho na le li-poliamine tse ka sehloohong liphoofolong tse anyesang: spermine, spermidine, putrescine le cadaverine. Spermine ke ea tetramines, spermidine ke ea triamines, putresc ...
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