Detection and expression analysis of selected miRNAs in multiple tissues. Expression profiles of some representative miRNAs (out of detected 44 miRNAs) in multiple tissues by PCR approach. While the figures are presented in the additional file 2 and the expression for all are summarized in the table 2. Amplicons were analyzed on 2% agarose gel. 5S rRNAs and U6 RNA were used as a loading control. A DNA ladder (M) indicating the size of the fragments (50-100-150 nt) on each side. Ovary denotes only the ovarian cortex without corpus luteum.