Table 1

Number of novel miRNAs sequenced from amphioxus by Solexa technology

miRNA genes present as a single copy

miRNA genes present as two copies

miRNA genes present as three copies

Total miRNA genes

Mature miRNAs

Mature miRNA*s

Conserved miRNA genes

36

8

1

55

45

27

Amphioxus-specific miRNA genes

49

3

1

58

53

18

Sum

113

98

45

Chen et al. Genome Biology 2009 10:R78   doi:10.1186/gb-2009-10-7-r78