Cellular localization of s100 g in E
-treated rat oviducts. Photomicrographs of unmated (A-C) and mated (E-F) rat oviducts 12 h after injecting vehicle (A, D) or E2(B, E). Arrows point to immunoreactivity of s100 g present only in epithelial cells. The specificity of immunoreactivity was confirmed by omitting the first antibody or replacing by preimmune serum (C, F). Insets in B and D show higher magnification of s100 g immunoreactivity in epithelial cells.