Figure 6From: Improved methodology for assaying brassinosteroids in plant tissues using magnetic hydrophilic material for both extraction and derivatizationMRM chromatograms of the BRs in plant tissue (100 mg FW) treated with the MSPE-ISD method. The five BRs were all spiked at 0.1 ng/mL. Peaks: 1. 28-norBL; 2. BL; 3. 28-norCS; 4. 28-homoBL; 5. CS.Back to article page