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Dynamic analysis diagram of the contents of Rb1 and Rd ginsenosides (Changchun location). Every value is the average calculated using five plant samples for each cultivation age from each of the three locations (n = 25). 3.1–3.5 represents five Panax ginseng plants aged 3 yr. 4.1–4.5 represents five P. ginseng plants aged 4 yr. 5.1–5.5 represents five P. ginseng plants aged 5 yr; 6.1–6.5 represents five P. ginseng plants aged 6 yr.
