Lipocalin-2, LCN2, Neurophil Gelatinase-Associated Lipocalin, NGAL, lipocalins, protein, secreted, neutrophil granule, MMP-9, kidney epithelia, inflammatory, Crohn’s Disease, carcinoma, human tumor, colon, lung, breast, ovaries, pancreas, Acute Kidney Injury, cardiac surgery, Chronic Kidney Disease, CKD, Chronic Heart Failure, CHF, apoptosis, immunity, innate immunity, secreted, Pyrrolidone carboxylic acid, apoptosis, cellular response, ion transport, immune response, and iron binding