Immunoblotting was performed as described previously [16 (link)]. Briefly, dissected intestinal were homogenized and lysed with lysis buffer. Protein extract was separated on SDS-PAGE and transferred to polyvinylidenedifluoride (PVDF) membrane and probed with the following antibodies: IL-6, IL-1β, TNF-α, PGE2, COX-2, and β-actin from Santa Cruz Biotechnology (Santa Cruz, CA). Band intensity was determined by densitometry analysis using the ImageJ analysis system.
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