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Table 4 CpG islands at transcription start and end sites

From: Definition, conservation and epigenetics of housekeeping and tissue-enriched genes

  Transcription start sites Transcription end sites  
  Number of genes with CpG islands (ratio) CpG density (/bp) P-value Number of genes with CpG islands (ratio) CpG density (/bp) P-value Total number of genes in class
HKGs 1,230 (80.8%) 0.563 3.5E-40 84 (5.5%) 0.02 3.0E-14 1,522
TEGs 279 (28.6%) 0.155 3.4E-40 49 (5.0%) 0.02 6.6E-13 975
RefSeq genes 8,881 (48.9%) 0.321   2086 (11.5%) 0.053   18,149