the sequence upstream (5’) of the miR-29a mature sequence may differ by up to 20 nucleotides from the corresponding 5’ human sequence when optimally aligned therewith, e.g. by 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 nucleotides.

Большое спасибо!