In darkness, leaf thickness, palisade tissue and sponge tissue thickness all decreased.
黑暗下叶片变薄,栅栏组织和海绵组织厚度均下降。
参考来源 - 黑暗及光照恢复对矮牵牛幼苗生理代谢的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
The leaf anatomic structure indicated that mesophyll was without the differentiation of palisade and sponge tissue. And the mesophyll cell is large and function as water storage.
叶肉细胞没有栅栏组织与海绵组织之分，细胞比较大，有贮水作用。
Objective: To investigate the feasibility of collagen sponge as scaffold material in bone tissue engineering.
目的：探索胶原海绵作为骨组织工程支架材料的可行性。
To investigate the methods of constructing tissue engineering skin by ES-derived epidermal-like stem cells and collagen sponge, and to lay a basis for seeking new tissue engineering skin.
目的探讨以es细胞源表皮样干细胞构建组织工程皮肤的方法，为构建新的组织工程皮肤奠定基础。
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