>Xtr-Mir-181-P1a_loop
UUGGUAUCUAAAGGCAA
>Xtr-Mir-181-P1b_loop
UUGAGAAAGUGUAAAAAUAUAA
>Xtr-Mir-181-P2a_loop
GAGUUAAGAACACAAG
>Xtr-Mir-181-P2b_loop
GUAGUUUAGAAAAG