The results indicated that ( 1 ) " longxianhuosuan " presented more regular and more densely - arranged epidermal cells in its scapes than " gailiangsuan " ; ( 2 ) " longxianhuosuan " showed a lower stomata number but a larger stomatal aperture in its scape surface than " gailiangsuan " ; its scapes had a great number of secretory cells , which had a larger size and appeared earlier ; its scapes presented a smaller number of vascular bundles with smaller diameters ( 3 ) " longxianhuosuan " had polygonal cells in its scape pith with their intercellular space occupying a small proportion while " gailiangsuan " showed elliptical cells in its scape pith with their intercellular space occupying a high proportion 结果表明： ( 1 ) “陇县火蒜”比“改良蒜”蒜薹的表皮细胞形状规则，排列致密；角质层较薄； ( 2 ) “陇县火蒜”比“改良蒜”蒜薹表面的气孔数量少，但开张度大；分泌细胞出现早、体积大、数量多；维管束数量少、直径小； ( 3 ) “陇县火蒜”蒜薹髓细胞卫多边形，髓细胞间隙率小，而“改良蒜”蒜薹的髓细胞呈椭圆形，髓细胞间隙率大。
Both upper and lower epidermis cells are polygonal or irregular in shape in all species studied . the patterns of anticlinal walls are straight , arched or sinuous , and the raphal cuticular striastriae are occasionally observed on periclinal walls . stomatal apparatus and secretory cells are found on the upper epidermis of several species and on the lower epidermis of all species 结果表明：这些植物叶片的上、下表皮细胞呈多边形或不规则形，垂周壁式样为平直、弓形或波浪状，平周壁偶有脊状条纹；少数种类上表皮还有气孔器或分泌细胞，所有种类下表皮具气孔器和分泌细胞；气孔器类型以平列型和侧列型居多，偶尔有无规则型；气孔极区呈稍角质加厚或棒状加厚，稀t形加厚。
After the cells adhere to each other , proliferate and secret the matrix , new tissue and organ with certain structure and function is shaped . so the culturation of seed cells , the study of three - dimensional scallfolds and the compatibility of seed cells and scalffolds are import aspect on study of tissue engineering 组织工程化颌下腺的体外构建基本思路是在体外分离培养颌下腺的细胞，扩增到一定数量后，接种在具有一定空间结构的三维生物材料支架上，通过细胞与支架、细胞与细胞之间相互黏附、生长、增殖和分泌细胞外基质，最终形成具有一定结构和功能的组织和器官。
Alligator sinensis , a kind of superior reptiles , acted as an important role in the course of vertebral animal evolution . studies on the development of the endocrine cells of its digestive system would provide us with significant documents for investigating the developmental characteristics of its endocrine cells and the evolution relationship between different groups of vertebral animals 扬子鳄是高等的爬行动物，在脊椎动物的进化过程中处于重要的地位，对其消化系统内分泌细胞发生进行研究，可为探讨其内分泌细胞发生的一般规律，以及不同类群脊椎动物演化的亲缘关系积累重要的资料。
Macrophage is a kind of immune cell as well as accessory cell . it can function as antiinfection , anticancer , immune response and immunoregulation by phagocytosis , antigen presentation , cytokines secretion , lymphocyte activation , reactive oxygen and no production . it ' s an important part of body immune system 巨噬细胞( macrophage )既是免疫细胞，又是辅佐免疫应答细胞，可通过吞噬、抗原呈递、分泌细胞因子、激活淋巴细胞和产生活性氧、 no等作用而行使抗感染、抗肿瘤、免疫应答和免疫调节作用，是机体免疫系统的重要组成部分。
Based on the revealed relationship between the secretary structures and substances , the secretary tissues of hypericum are classified into 2 main types : type i is the tissue that secretes and stores such dianthrone compounds as hypericin . this a group of secretary cells , forming into black glands . type ii is the tissue that secretes and stores essential oils 进行了金丝桃属药用植物分泌组织的系统研究，揭示出其分泌结构与分泌物质的关系，并在此基础上提出了该属药用植物分泌组织主要类型的划分：一类是分泌和贮存二蒽酮金丝桃素类化合物的组织，多为分泌细胞组成的细胞团，形成黑色腺体；另一类是分泌和贮存挥发油类成分的组织，是裂生性的分泌腔或分泌道，常形成半透明腺体。
