tokens: Combining our data with the consensus genetic map of the proximal short arm of the X chromosome , we propose the physical order Xcen - DXS14 - DXS255 - ( DXS426 , TIMP ) - ( DXS742 - ( [ MAOB - MAOA - DXS7 ] , NDP ) - DXS77 - DXS228 ) - DXS209 - DXS148 - DXS196 - + + + Xpter .