Distribution of immunoreactivity in the goat reticulum. (A) SYN-positive staining in the lamina propria-submucosa, tunica muscularis, serosa, and myenteric plexus (arrow) at 64 days (43% gestation). (B) NNE-specific immunoreactivity visible in the epithelium (arrow), lamina propria-submucosa, tunica muscularis, serosa, and myenteric plexus (arrow) at 69 days (46% gestation). (C) GFAP-positive staining in the lamina propria-submucosa, tunica muscularis, and myenteric plexus (arrow) at 64 days (43% gestation). (D) VIM-specific immunostaining in the pluripotential blastemic tissue layer and serosa at 39 days (25% gestation). (E) NPY-positive staining in the lamina propria-submucosa, tunica muscularis, and myenteric plexus (arrow) at 75 days (50% gestation). (F) VIP-specific staining in the lamina propria-submucosa, tunica muscularis, and myenteric plexus (arrows) at 75 days (50% gestation). Scale bars = 25 µm (A, C, D, and E), 20 µm (B), or 30 µm (F).