This track depicts DNAse I hypersensitive sites (DHS) mapped to the human genome sequence. Each track element represents the surrounding 500 bp from the position of the estimated DHS, as determined from Smith et al. (2000) "Multiple Potential Intragenic Regulatory Elements in the CFTR Gene", Genomics 64(1):90-6.
Additional information about the methods used to produce this data is available in the paper Margulies, E. et al. (2003) "Identification and Characterization of Multi-Species Conserved Sequences". Genome Res. 13:2507-2518.
This track was generated by Elliott Margulies at NHGRI. Ryan Weber of the UCSC Genome Bioinformatics Group provided the computational support for the track display.