Prickles are smaller than thorns: they are sharp outgrowths of the plant's outer layers, the skin-like epidermis, and the sub-epidermal layer just beneath it.
皮刺比刺要小了许多：它们是这些植物外层的附属物，看上去像皮肤的表皮，其下还有亚表皮层。
Results:The thickness of epidermis layer was reduced obviously in diabetic skin, with morphological characteristics of obscuring of multiplicity of epidermal cell layers.
结果：糖尿病皮肤表皮细胞层次欠清晰，部分表皮缺乏复层排列，棘细胞数量明显减少，表皮层厚度明显变薄；
The exocarp contains only one layer of epidermal cells.
外果皮由一层表皮细胞构成。
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