“…In addition, the molecular weight ( M w ), molecular size (space), 3D structures, and amino acid sequence of toxin molecules 23 can be used as references for monitoring and detection. Some middle molecules, such as leptin, 24 Adiponectin, 25 β2-m, 26,27 and fibroblast growth factor 23 (FGF-23), 28 their M w can be estimated to be 16, 28, 11.8, and 32 kDa, respectively. Among them, the molecular sizes of leptin and β2-m can also be estimated as 20 × 25 × 45 and 45 × 25 × 20 Å 3 , respectively.…”