BCL2 and serum lipopolysaccharide activity: Endotoxemia in the sucking animals caused by increasing doses of LPS (5, 10 or 15 mg/kg/day × 5 days) in significant and dose-dependent way downregulated Bcl-2 protein level in the pancreatic acini incubated with caerulein (10−8 M) as compared to the caerulein-treated group alone.