Figure 7From: A selective pretreatment method for determination of endogenous active brassinosteroids in plant tissues: double layered solid phase extraction combined with boronate affinity polymer monolith microextractionMRM chromatographs of real samples. O. sativa YTA shoot (A), O. sativa YTB shoot (B), B. napus shoots (C), B. napus flower buds (D1-D4), B. napus flowers (E1-E3). Peaks: 1. 28-norBL; 2. 28-norCS; 3.BL; 4.CS.Back to article page