Figure 4.
Immunoblotting analysis of claudin-1 in the colon of the preterm and the term germ-free piglets. The expression of claudin-1 (normalized to β-actin) in the colon of the preterm (n = 10) and the term (n = 6) germ-free piglets was analyzed by Western blot. Examples of β-actin (upper) and claudin-1 (lower) bands detected in one sample from each group are shown in the columns. The results are depicted as mean + SEM. The statistical significances are denoted with double asterisks (P < 0.01).