Figures 11–15; Electron micrographs of the serous glands of the inguinal region. (11) Low magnification of the secretory syncytium with two visible nuclei (n) and also a sizeable cytoplasmic secretion aggregate (s). Notice the syncytium center (sc) filled with electron dense secretion and also the clear space (*) between syncytium basis and myoepithelial cells (m). Around the myoepithelial cells are some collagen fibrils (co). (12–13) Medium magnification of syncytium, where it is possible to notice some cytoplasmic secretion aggregate (s) and some regions of the cytoplasm with medium electron density (c). (14–15) Major magnifications of two large cytoplasmic secretion aggregate, with mixed portions of electron dense secretion (s) with medium electron density cytoplasm (c). (p) basal digitiform projections; (rer) rough endoplasmic reticulum. Sacale bars: 14, 15 = 1 μm, 12, 13 = 3 μm, 11 = 5 μm.
Figures 41–45; Light micrograph of the integument of O. trapicheroi: (41) Dorsal region (Mallory´s trichrome staining); (42) Dorsal region (AB-method); (43) Ventrolateral region (AB-method); (44) Ventral region (HE-staining); (45) Ventral region (AB-method). Melanophores (_) occur in the spongious dermis of the dorsal integument, and in the ventrolateral region as isolated groups. They are absent in the ventral integument. In the dorsal region, the EK-layer (Æ) is continuous and well stained by the AB-method. Isolated serous glands (Ø) occur in all integument regions. The apocrine glands with granular content (¬) are visualized in the ventrolateral integument, where they are more developed. In the ventral region, cutaneous elevations (â) are also separated by grooves. The dermis contains several small blood vessels. E= epidermis; CD = compact dermis.