Fig. 6. Hairy roots induced from roots of Panax ginseng. Hairy roots of controls (C-6 and C-9) and overexpressionPgLHT lines (A-4, A-7, A12, and A-16) cultivated on solid Murashige and Skoog medium at 26℃ at 15 d after subculture of the culture cycle. All lines presented the typical traits of hairy roots and had no morphological difference.