Presence and biosynthesis of putrescine and polyamines in amphibians.
D000588:Amines / Q000032:analysis*; D000818:Animals; D001001:Anura; D004586:Electrophoresis; D004625:Embryo, Nonmammalian / Q000032:analysis*; D008099:Liver / Q000032:analysis*; D008675:Metamorphosis, Biological; D013096:Spermine / Q000032:analysis
D000588:Amines; D013096:Spermine