Lcn-2, also referred to as neutrophil gelatinase-associated lipocalin (NGAL) or siderocalin, is a bacteriostatic protein mainly released from neutrophils at sites of inflammation [42], and its level in serum, colon, and fecal samples is elevated in multiple models of UC and in human IBD [43, 44]. Here, LCN2 is linked to inflammatory bowel disease.