Fig. 2From: Rapid identification of growth years and profiling of bioactive ingredients in Astragalus membranaceus var. mongholicus (Huangqi) roots from Hunyuan, ShanxiThe growth rings in huangqi from Hunyuan County, Shanxi Province. a Growth rings in 1-year-old roots; b growth rings in 2-year-old roots; c growth rings in 3-year-old roots; d growth rings in 4-year-old roots; e growth rings in 5-year-old rootsBack to article page