genome chm1_cens_v17 trackDb chm1_cens_v17/trackDb.txt groups chm1_cens_v17/groups.txt description CHM1 centromere assemblies v17 by Glennis Logsdon twoBitPath chm1_cens_v17/chm1_cens_v17.2bit organism Human defaultPos chm1_cen5v2:28500000-34300000 scientificName Homo sapiens