Main Reaction: Putrescine >> spermidine

Reference: PubMed ID: 3661847
Authors: Dimery IW, Nishioka K, Grossie VB Jr, Ota DM, Schantz SP, Byers R, Robbins KT, Hong WK
Title: Polyamine metabolism in carcinoma of the oral cavity compared with adjacent and normal oral mucosa.
Published: 1987 Oct

Putrescine --> spermidine