>Dre-Mir-21-P1_pre
UAGCUUAUCAGACUGGUGUUGGCUGUUACAUUCGCCCGGCGACAACAGUCUGUAGGCUGUC
>Dre-Mir-21-P2_pre
UAGCUUAUCAGACUGGUGUUGGCUUUGAGUUUUUGGCAACAGCAGUCUAAUAGGCUGUC