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Table 2 The number of clustered miRNAs and isolated miRNAs found in the human, mouse and rat genomes using our definition of miRNA cluster.

From: Filtering of false positive microRNA candidates by a clustering-based approach

   Human Mouse Rat
Version of miRBase   10.0 10.0 10.1
Total # of clusters   60 55 48
Size of clusters Min 2 2 2
  Mean 4 4.31 3.04
  Max 43 52 17
Isolated miRNAs # 288 220 154
  % 54.55% 48.14% 51.33%
Clustered miRNAs # 240 237 146
  % 45.45% 51.86% 48.67%
Total # of miRNAs   528 457 300
  1. "Version of miRBase" denotes the update version of miRBase where the datasets are downloaded. "Size of clusters" is equivalently to the number of miRNAs found in a single cluster. There are 60, 55 and 47 clusters identified in the three genomes respectively, which are equivalent to 45.45%, 51.86% and 48.67% of the total human, mouse and rat miRNAs.