Acknowledgments
This work was supported by the 2013 grant from the Korean
Society of Ginseng-funded Korean Ginseng Corporation, the Basic
Science Research Program (NRF-2014R1A1A2054538), and the
Priority Research Centers Program through the National Research
Foundation of Korea (NRF), which is funded by the Ministry of
Education, Science, and Technology (2012-0006686), and by the
BK21 plus project fund to S.-Y. Nah.