- Physical mapping of loci in the distal half of the short arm of the human X chromosome: implications for the spreading of X-chromosome inactivation. Wang, J.C., Passage, M.B., Ellison, J., Becker, M.A., Yen, P.H., Shapiro, L.J., Mohandas, T.K. Somat. Cell Mol. Genet. (1992)