Counts of known miRNAs originating from 5′ or 3′ arm of precursors in four libraries.

<p>a. Numbers indicate counts for all isomiRs originating from 5<b>′</b>(5p) or 3<b>′</b>(3p) arms of the miRNA precursor.</p><p>b. miRNAs from two arms showed a reversal in the ratios across four RNA libraries.</p><p>c. miRNAs deriving from 3′ ends of precursor had more counts than that from 5′ ends.