Source:http://linkedlifedata.com/resource/umls/id/C0043292
MSH: The female sex chromosome, being the differential sex chromosome carried by half the male gametes and all female gametes in human and other male-heterogametic species.,GO: The sex chromosome present in both sexes of species in which the male is the heterogametic sex. Two copies of the X chromosome are present in each somatic cell of females and one copy is present in males. [GOC:mah, ISBN:0582227089],NCI: The sex chromosome that is present in both sexes: singly in males and doubly in females. (WordNet)