Source:http://linkedlifedata.com/resource/umls/id/C0008664
MSH: A specific pair of GROUP G CHROMOSOMES of the human chromosome classification.,CSP: chromosome found in a trisomic state in the cells of persons with Down syndrome.,NCI: The designation for each member of the second smallest human autosomal chromosome pair. Chromosome 21 spans around 47 million nucleotides and represents about 1.5% of the total DNA in normal diploid cells.