Source:http://linkedlifedata.com/resource/umls/id/C0012933
MSH: DNA sequences encoding RIBOSOMAL RNA and the segments of DNA separating the individual ribosomal RNA genes, referred to as RIBOSOMAL SPACER DNA.,CSP: DNA sequences encoding ribosomal RNA and the segments of DNA separating the individual ribosomal RNA genes, referred to as ribosomal spacer DNA.