Source:http://linkedlifedata.com/resource/umls/id/C0035142
MSH: Any DNA sequence capable of independent replication or a molecule that possesses a REPLICATION ORIGIN and which is therefore potentially capable of being replicated in a suitable cell. (Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed),CSP: a unit of DNA that contains a DNA replication origin and a termination point and is capable of self-replication.