PDX1 and chronic pancreatitis: We used a cytokine array to investigate the presence of immunomodulatory factors in tissue lysates of Pdx1-Cre;iASPP+/+, Pdx1-Cre;iASPPΔ8/Δ8, KC and KC;iASPPΔ8/Δ8 pancreata after 6 weeks of mild chronic pancreatitis (Fig. 5A).