Source:http://linkedlifedata.com/resource/umls/id/C0010843
MSH: A pyrimidine base that is a fundamental unit of nucleic acids.,CSP: 2-keto-4-aminopyrimidine, one of the 5 major bases (with adenine, guanine, uracil, and thymine) which are a component of nucleic acids.,NCI: A chemical compound that is used to make one of the building blocks of DNA and RNA. It is a type of pyrimidine.,NCI: A pyrimidine base found in DNA and RNA that pairs with guanine.