Six hours after the last ethanol exposure, mice were euthanized and the pancreatic tissues were processed for the immunoblotting analysis of ER stress markers (p-eiF2α, XBP-1, CHOP, ATF6, p-PERK, GRP78 and GRP94) (A and B). The antibody for XBP-1 recognizes both spliced XBP-1 (sXBP-1) and un-spliced XBP-1 (uXBP-1). The relative expression of these ER stress markers were quantified and normalized to α-tubulin (C-I). Each data point was the mean ± SEM of three animals. * denotes statistical difference (p<0.05) and ** denotes significant difference (p<0.01).