Source:http://linkedlifedata.com/resource/umls/id/C0037874
MSH: A biogenic polyamine formed from spermidine. It is found in a wide variety of organisms and tissues and is an essential growth factor in some bacteria. It is found as a polycation at all pH values. Spermine is associated with nucleic acids, particularly in viruses, and is thought to stabilize the helical structure.,CSP: biogenic polyamine formed from spermidine, found in a wide variety of organisms and tissues and an essential growth factor in some bacteria; it is associated with nucleic acids, particularly in viruses, and is thought to stabilize the helical structure.