The current investigation was planned utilizing SEM, histological, and furthermore cytokeratin immunohistochemical to give a full depiction of skin of three reptiles species; Chalcides ocellatus (Scincidae), Uromastyx aegyptia aegyptia (Agamidae), and Psammophis schokari aegyptia (Colubridae) captured from Egypt with various ecological environment. Our SEM results showed different scales covered epidermis of three reptile's species with diverse surface microstructure. Overlapped rhomboid scales with numerous lenticular sense organs with numerous pores and oberhäutchen layer with microridges in C. ocellatus. In U. aegyptia, scales were overlapped elliptical-shaped possess lens-like sense structure with several scattered pits and oberhäutchen layer with polygonal outlined cells. While in P. schokari aegyptia, smooth scales flattened with two large dome-shaped scale receptors/sensilla and lens-like sense structure, moreover polygonal-shaped micro-ornamentation in scale hinge joints were observed. Histologically, skin of three species had outer epidermis with stratum germinativum, stratum corneum (α-keratin, β-keratin layer) capped by surface Oberhäutchen and inner dermis. Osteoderms were observed with dermis of C. ocellatus. There are marked variation within pigment cells types among examined species. Melanophores observed in dermal layer of C. ocellatus, while in U. aegyptia, three pigment cells in tegument dermis; melanophores, xanthophores, and iridophores whereas, P. schokari aegyptia had two forms of chromatophore cells (melanophores and iridophores) in dermis and few melanophores scattered between stratum germinativum cells. The highest cytokeratin immunostaining observed in epidermal cell layer of U. aegyptia aegyptia than two other species. Conclusion, dry scaly skin of reptiles reflects a great range of functional aspects and success to adapt with terrestrial life.

中文翻译：

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三种爬行动物皮肤的超微结构-功能比较特征；Chalcides ocellatus、Uromastyx aegyptia aegyptia 和 Psammophis schokari aegyptia（FORSKAL，1775）：对其栖息地的适应性策略

目前的调查计划利用扫描电镜、组织学和细胞角蛋白免疫组织化学来全面描述三种爬行动物的皮肤；Chalcides ocellatus (Scincidae)、Uromastyx aegyptia aegyptia (Agamidae) 和Psammophis schokari aegyptia (Colubridae) 在不同生态环境下从埃及捕获。我们的扫描电镜结果显示，三种爬行动物的表皮覆盖了不同的鳞片，具有不同的表面微结构。C. ocellatus 中重叠的菱形鳞片与许多透镜状感觉器官和许多孔和带有微脊的 oberhäutchen 层。在美国埃及，鳞片重叠椭圆形具有透镜状感觉结构，有几个分散的凹坑和带有多边形轮廓细胞的 oberhäutchen 层。而在P. schokari aegyptia 中，光滑的鳞片变平，有两个大的圆顶状鳞片受体/感受器和透镜状感觉结构，此外在鳞片铰链中观察到多边形微装饰。组织学上，三个物种的皮肤具有外表皮和生发层，角质层（α-角蛋白、β-角蛋白层）被表面 Oberhäutchen 和内层真皮覆盖。用C. ocellatus 的真皮观察到骨皮。受检物种之间的色素细胞类型存在显着差异。在C. ocellatus 的真皮层中观察到黑色素细胞，而在U. aegyptia，真皮真皮中的三个色素细胞；黑素细胞、黄素细胞和虹膜细胞，而P. schokari aegyptia在真皮中有两种形式的色素细胞（黑素细胞和虹膜细胞），很少有黑素细胞散布在生发层细胞之间。在U. aegyptia aegyptia 的表皮细胞层中观察到的最高细胞角蛋白免疫染色高于其他两种物种。结论，爬行动物的干燥鳞状皮肤反映了广泛的功能方面和适应陆地生活的成功。