Figure 3.

Organ-specific mRNA and protein expression levels of OCLN, JAM-A and ZO-1 in canine duodenum, lung, liver and kidney. mRNA expression levels of (A) OCLN, (B) JAM-A and (C) ZO-1 were greatest in the duodenum, moderate in the lung and kidney, and low in the liver. Protein expression levels of (D) OCLN, (E) JAM-A and (F) ZO-1 followed a similar pattern to mRNA expression levels. mRNA and protein expression were normalized to β-actin. Data are presented as the mean ± standard deviation. OCLN, occludin; JAM-A, junction adhesion molecule A; ZO-1, zona occludens 1; ACTB, β-actin; D, duodenum; Lu, lung; Li, liver; K, kidney.