上表皮

上表皮致密，较薄，厚度均匀。

The epicuticle i3 dense and relatively uniform in thickness .

表皮可分二层：上表皮和内表皮。

The cuticle has two layers : epicuticle and endocuticle .

扫描电镜下可见脱细胞SIS上表皮细胞融合生长，透过细胞间隙可见其下的网状结构的脱细胞SIS。

Observation through scanning electron microscope revealed the confluence growth of epidermal cells on the surface of acellular small intestinal submucosa and its underneath reticular structure through intercellular spaces . 3 .

结论：DWI优于常规MRI发现颅内表皮样囊肿，DWI上表皮样囊肿的高信号可能是肿瘤组织的T2余辉效应所致。

Conclusion : DWI is superior to conventional MR imaging in finding intracranial epidermoid cysts , the hyperintense signal of epidermoid cysts on DWI is probably caused by the T2 shine-through effect in tumor tissue .

在毒腺的分泌细胞层和卵巢上表皮细胞中存在着一种球状VLP，它们内含电子致密物质，直径大约50nm；

One kind of spherical-shaped particles occurs both in the secretory cells of the gland filaments and the ovarial epithelial cells , approximately 50 nm in diameter .

Orlandotangelo，Marrsorange和StarRuby柚子叶片下表皮的侵染点比上表皮多。

Both Amber sweet orange and Rio Red grapefruit had numerous infections on both the upper and lower epidermis . Orlando tangelo , Marrs orange , and Star Ruby grapefruit had more infection sites on the lower epidermis than on the upper epidermis .

葡萄叶片齿尖上表皮气孔形态及发育特征

Morphology and Development of Adaxial Stomata on Tooth-tips of Grape Leaves

上表皮气孔分布密度大于下表皮。

The density of stoma was higher in uper epidermis than in lower epidermis .

上表皮细胞均大于下表皮细胞。

The sizes of upper epidermal cells were bigger than that of lower epidermis .

目的研究记录小鼠生精细胞上表皮钠通道电流。

Objective To observe epithelial sodium channels ( ENaC ) currents in spermatogenic cells .

正对主脉的上表皮凹陷处均有泡状细胞。

The bulliform cells were situated in groove of upper epidermis facing the main vein .

叶上表皮有盐腺；

Salt glands were observed on epidermis .

喜马拉雅嵩草、矮生嵩草和高山嵩草的上表皮角质膜厚度大于下表皮角质膜，而线叶嵩草的相反。

The thickness of the upper cuticular membrane was bigger than the lower one in K.

上表皮角质膜一般较下表皮角质膜厚1μm，下表皮上零星分布着单细胞表皮毛。

The horny layers in upper epidermis are 1 μ m thicker than that in lower epidermis .

上表皮气孔数目和行列一般比下表皮少。

The number and ranks of stomatas on upper epidermis were generally less than that on lower ones .

其叶片横切面由上表皮、叶肉组织、叶脉及下表皮四个部分组成。

Leaf anatomical structure was composed of four parts : upper epidermis , mesophyll tissue , vein and lower epidermis .

四种栎属植物的气孔类型相同，且均分布于下表皮，上表皮无分布，但是气孔的大小及分布密度各不相同。

The type and distribution of stomata are the same , but the size and the density of stomata are different .

用光学显微镜对葡萄叶片齿尖上表皮气孔的形态、发育、结构进行了观察。

Morphology and development of adaxial stomata on tooth tips of grape leaves were observed with light microscope and scanning electron microscope .

分别对黄柏叶片上表皮和下表皮进行接种试验，发现两个接种部位都能够引起叶片发病。

When inoculating the upper epidermis and lower epidermis of leaf surface with uredospores respectively , both of them could cause disease .

叶为异面叶，表皮毛为多细胞型，下表皮气孔密度多于上表皮，上下表皮均有角质层。

The density of stoma in the down-epidermis was bigger than the up-epidermis , the two sides of the leaf had corneous layer .

草地和丛林中陆栖穴居并是夜间活动的蛙，头的上表皮非常硬；产于美国西南部。

Terrestrial burrowing nocturnal frog of grassy terrain and scrub forests having very hard upper surface of head ; of the United States southwest .

同一叶片其下表皮气孔密度大于上表皮，试管苗与土培苗两者叶片下表皮气孔密度差异不显著。

Stomata densities of same type leaf under epidermal are higher than upper epidermal , but were not significantly different between test-tube seedling and land seedling .

棉纤维最初是棉籽上表皮细胞突起延伸的管状结构，内部充满原形质。

Tightly woven fabric with raised cords . A tubular growth which encloses the living protoplast is initially formed the epidermal cells of the cotton seeds .

与野生型水稻相比，裸粒水稻的内、外稃质薄而软，裸粒水稻上表皮细胞小，硅化程度较小，茸毛短且细。

Compared to those in wild-type spikelet , the palea / lemma appeared thinner and displayed fewer and smaller epidermal cells and shorter trichomes with higher density in nsr .

叶上表皮细胞表面观有明显的角质层细密纹理，中央有一短小的乳头状突起。

There were clearly close cuticle grain on the surface of the cells of upper epidermis of leaves and a short small papilla at the center of each cell .

与此同时，栅栏组织细胞和海绵组织细胞中叶绿体的含量明显减少，并且由于上表皮层细胞的延长而增大了细胞间隙。

At the same time , content of chloroplast in palisade and spongy parenchyma decreases obviously , and their intercellular spaces are increased because of lengthen of adaxial and abaxial epidermis cell .

接种方式对诱导率影响很大，当幼子叶的上表皮与培养基接触时，不能诱导胚胎发生。

To a great extent , the embryogenesis was affected by inoculating method , when the adaxial surface of the immature cotyledons contacted to the medium , somatic embryos could not produced .

生姜生长的光质环境显著影响了气孔形态特征，绿膜覆盖生姜叶片上表皮气孔密度、气孔宽度、气孔孔径宽度较其他处理大。

Light quality affected the stomatic characteristics in ginger leaves . The upper cuticle stomatic density , stomatic width and stomatal aperture width under green film was the highest than those of others .

其上表皮层厚的品种，种群增长倍数高，抗性低。

While on the varieties having thick obverse epidermis , invalid feature for the resistance to this mite , the population growth rates of mite were high and their mite resistance were low .

⑶落羽杉属树种的叶片横切面：由上表皮、上栅栏组织、海绵组织、下栅栏组织和下表皮组成。

⑶ Results of leaves anatomy in Taxodium species and hybrids demonstrated that leaf was composed of upper epidermis , upper palisade tissue , spongy tissue , lower palisade tissue , and lower epidermis .