Displaying 6 results of Spermidine Stable Isotopes Spermidine is a naturally occurring polyamine involved in various cellular processes, including DNA synthesis, cell growth, and apoptosis. Stable isotopes of spermidine, such as 13C-spermidine and 15N-spermidine, are commonly used in metabolic studies to track the fate and distribution of spermidine in biological systems. These isotopes offer a valuable tool for investigating the complex interactions between spermidine and other cellular components, contributing to our understanding of cellular metabolism and physiology.