Source:http://linkedlifedata.com/resource/umls/id/C0028303
MSH: The failure of homologous CHROMOSOMES or CHROMATIDS to segregate during MITOSIS or MEIOSIS with the result that one daughter cell has both of a pair of parental chromosomes or chromatids and the other has none.,CSP: failure of homologous chromosomes to separate during meiosis, or the failure of sister chromatids to separate during mitosis.