BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Mitragyna speciosa: Hairy Root Culture for Triterpenoid Production and High Yield of Mitragynine by Regenerated Plants

Siriwan Phongprueksapattana, Waraporn Putalun, Niwat Keawpradub and Juraithip Wungsintaweekul