端细胞的

The sensitization system of an ommatidium included 11 retinular cells, of which four located at the distal part of the ommatidium; seven formed the proximal main part of the retina. The two parts are some one on top of another.

透射电镜观察显示红螯螯虾小眼的感光系统由11个小网膜细胞组成，其中4个小网膜细胞位于晶锥之下，构成了感光部分的远端，7个小网膜细胞构成感光系统的近端主体，上下两部分有重叠。

5Um〓. The surface area of the compound eye is about 21. 044mm〓. An ommatidium composed of cornea, four corneagenous cells, four cone cells and retinular cells.

光镜观察显示红螯螯虾复眼的每个小眼从远端到近端分别由角膜、4个角膜生成细胞、4个晶锥细胞组成的晶锥及小网膜细胞构成。

Results Trunk neural crest stem cells were successfully isolated and cultured. The immuocytochemcal result showed that the cells were nestin-and P75-positive. Trunk neural crest stem cells grew through adhering to chitosan fiber after inoculation. Under an electon microscope, the spindle-shaped trunk neural crest stem cells were proliferated and migrated along the fiber. The cells arranged side by side or linked by heads and tails in processes. The ends of S-100 positive cells were flat and expanded, adhering to the fiber as claw-shaped pseudopodium.

结果 采用神经管植块法培养的神经嵴干细胞，免疫细胞化学染色呈现nestin及P75双阳性，将其接种在壳聚糖纤维支架材料上，可见神经嵴干细胞贴附于壳聚糖纤维上生长；S-100免疫细胞化学染色显示，S-100阳性细胞突起的末端呈扁平状膨大；扫描电镜显示，壳聚糖纤维上的躯干神经嵴干细胞为梭形，呈现"端对端"、"肩并肩"排列，伸出爪形伪足贴附于壳聚糖纤维上。

In SMC group, relative stable of the both ends of fracture reduce unnessary repeated stimulation of injury, and at same time, axio-stress advantageous for preosteoblast and mesenchymal cell transmit to osteoblast and chondroblast. Material and design superiority of SMC form unique internal mechanical environment, and which benefit for bone healing. The study took deep investigation of SMC on fracture healing.

上述结果证实：SMC内固定可对骨折端施加主动的、持续的轴向应力刺激，形成沿长骨骨干轴向的成骨导向力值，配合环抱翼的把持作用，形成了区别于CP、IN的独特的稳定、有效的机械内环境，骨折端的相对稳定减少了不必要的损伤再刺激，同时持续轴向应力有利于成骨祖细胞、间充质细胞向成骨细胞和成软骨细胞转化、促进了成骨诱导过程的发生与发展，加快了骨折愈合的修复与重建。

After HRP application to the rostral area (n=10), quite a number of labelled cells were distributed at the ventrolateral part of the nucleus of trapezoid body, the lateroventral periolivary nucleus and the retrotrapezoid nucleus. After HRP application to the caudal area (n=10), HRP labelled cells were mainly located at the lateral reticular nucleus and the ventral part of at the lateral paragigantocellular nucleus LPGi. After HRP application to the intermediate area (n=6), only 8HRP labelled cells were observed at the in 6rats. After HRP application to the control area (n=4), only 6HRP labelled cells were found at the rostral ventrolateral reticular nucleus.

大鼠延髓腹外侧表面的头端化学感受区表面敷贴辣根过氧化物酶后，在延髓斜方体核、外周橄榄腹外侧核和斜方体后核均有HRP标记细胞存在；于尾端化学感受区表面敷贴HRP后，在延髓的巨细胞旁外侧核、外侧网状核和舌下神经核有HRP标记细胞存在；于中间区表面敷贴HRP后，在6只大鼠的延髓内部区域仅观察到8个HRP标记细胞；于对照区敷贴HRP后，在4只大鼠的延髓内部区域仅观察到6个HRP标记细胞，散在地分布在头端腹外侧网状核。

We found, GLP-1-IR cells in various guts of rat, pig and foetus of human with distribution scatteredly among the basal portion of intestinal glands. The cell shape corresponded with open type cells, i.e. L-cells. The density of GLP-1-IR cells was different in races, but the distribution regularity of GLP-1-IR cells was same. It showed that a continuous increase from the proximal to the distal portion of small and bowel.

结果发现：在各段肠管都可见到GLP-1-IR细胞；GLP-1-IR细胞散在于肠腺的柱状上皮细胞之间，多位于肠腺的基底部，呈开放型内分泌细胞形态，即L细胞；不同种属问GLP-1-IR细胞密度不同，但分布规律相同，即自小肠和大肠的近端向远端逐渐增大。

Telomerase activity of cavo3 cells treated with spermidine for 3 days significantly increased compared to the control group. conclusion: telomerase activity increased with the increasing of spermidine levels.

用不同浓度精脒室温处理的caov3细胞端粒酶提取液2小时后，端粒酶活性与对照组差异无显著性。caov3细胞经不同浓度精脒处理3天后的端粒酶活性与对照组相比明显增高。

HTERT is expressed in cancer cell lines despite promoter DNA methylation by preservation of unmethylated DNA and active chromatin around the transcription start site.

人端粒酶逆转录酶是一种核糖核蛋白酶，由端粒RNA和端粒酶蛋白组成的一种特殊逆转录酶，在激活端粒酶的过程中起限速作用，能以自身RNA为模板合成端粒序列以稳定端粒长度使细胞获得永生，也是人类端粒酶的活性中心，其表达是端粒酶活化的必须前题［2～4］。

The results show the Boer goat oocyte and pre-implantation embryo are telomerase positive. According to the densitometry of bands under the CCD imagine system, the total telomere repeats product generated of oocytes, 4-cell, 8-cell, morulae and blastocyst are 25.348, 273.832, 56.117, 251.118, 519.46, respectively.

结果表明波尔山羊卵母细胞和早期胚胎都是端粒酶阳性；依据电泳条带在凝胶成像系统下的光密度计算相对总产品产量定量比较发现，卵母细胞最低为25.348，4-细胞为273.832，至8-细胞又降低到56.117，随后快速升高，桑椹胚为251.111，囊胚端粒酶活性最高为519.46。

The increase of the area of the compound eyes in Cherax quadricarinatus is mainly caused by the increase of both the number and the area of the ommatidia.

每个小眼从远端到近端分别由角膜、角膜生成细胞、4个晶锥细胞组成的晶锥及小网膜细胞构成。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。