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Table 3 Average expression across human tissues of pre-miRs containing conserved TFBS (z-score ≥ 2.33).

From: Transcription factor binding sites are highly enriched within microRNA precursor sequences

  Expression level Row total
  High Intermediate Low Very low  
pre-miRs containing TFBS 30 21 14 10 75
pre-miRs lacking TFBS 55 74 81 91 301
Column total 85 95 95 101 376
  1. Pre-miRs that contain TFBS tended to have higher expression than those lacking TFBS (χ2 = 20.82, p = 0.0001).