| umls-concept:C0037871 | skos:definition | MSH: A polyamine formed from putrescine. It is found in almost all tissues in association with nucleic acids. It is found as a cation at all pH values, and is thought to help stabilize some membranes and nucleic acid structures. It is a precursor of spermine.,CSP: polyamine found in most tissues in association with nucleic acids; formed from putrescine and a precursor of spermine. | lld:umls |
