PROK2 and ulcerative colitis: Other neutrophil/myeloid-associated genes, PROK2 (prokineticin 2) and FCGR3, which were most highly expressed in the biopsies from ulcerative colitis patients, were most abundant in the LPLs from H. hepaticus-infected Maffl/flCd4Cre mice, potentially underpinning a pathobiologic neutrophil-driven mechanism for human IBD.