Figure 1From: Clinical review: Biomarkers of acute kidney injury: where are we now?Origin of acute kidney injury biomarkers within a single nephron. GST, glutathione S-transferase; GT, glutamyl transpeptidase; KIM, kidney injury molecule; L-FABP, liver-type fatty acid-binding protein; NAG, N-acetyl-β-D-glucosaminidase; NGAL, neutrophil gelatinase-associated lipocalin; RBP, retinol binding protein.Back to article page