Fig. 1

Number of MiRNAs expressed in each type of tooth. Of the detectable miRNA transcripts, 260–295 were expressed in the first deciduous incisor (Di), 304–427 were expressed in the deciduous canine (Dc), 270–291 were expressed in the second deciduous premolar (Dpm), and 408–511 were expressed in the deciduous molar (Dm) from E40 to E60. Differences in the number of miRNAs expressed at each stage were statistically significant (p = 0.0024)