<p>Representative photomicrographs for pancytokeratin (1:2500) immunohistochemical staining of fetal skin. (A) control; (B) LPS at 16 h; (C) LPS and IL-1ra at 16 h exposure. (D) Graph shows the comparison between groups in the percent of positive cells of different intensity stain; intense (arrow), moderate and no stain (magnification bar represents 20 μm). <b>*</b>indicates a significant difference in the percent of positive cell between LPS at 16 hours and untreated control group. ɸ indicates a significant difference in the percent of positive cell between LPS group and LPS plus IL-1ra group at 16 hours.</p
