无细胞的

Experimentally determined critical growth rate for the occurrence of banded structure is very close to the absolute stability velocity predicted by M-S theory.

首次在Cu-26.6％Mn合金的激光快速凝固实验中观察到了细胞晶→带状结构→无亚结构的界面形态转变。

AIM: To observe the changes of tyrosine hydroxylase protein levels and the density of dopaminergic amacrine cells before and after the administering brain derived neurotrophic factor protein into the vitreous cavities of streptozotocin reduced Wistar diabetic rats.

目的：观察玻璃体腔内注射脑源性神经营养因子（Brain derived neurotrophic factor，BDNF）前后STZ糖尿病大鼠视网膜中酪氨酸羟化酶（tyrosine hydroxylase，TH）的水平及多巴胺能无长突细胞数目的变化。

METHODS: Adult male Wistar rats, 9 weeks of age, were injected intraperitoneally with STZ to create diabetes. At 2 week after the models were created, BDNF protein was administered into the vitreous cavities of rats. At 4 week after the models were created, the rats were killed and the retina was removed for Western blotting and Whole-mount immunohistochemistry for TH to observe the changes of TH and dopaminergic amacrine cells in retina.

9周龄Wistar大鼠，链脲佐菌素（streptozotocin，STZ）腹腔注射，制成糖尿病模型，于模型建立2wk后，大鼠眼玻璃体内注射BDNF溶液，于模型建立4wk后，处死大鼠，取出眼球，取视网膜组织进行Western blotting及视网膜铺片免疫组织化学染色检测，观察视网膜中TH水平的变化，从而反映糖尿病大鼠视网膜中多巴胺能无长突细胞水平的变化。

In angiosperms, a diploid embryo may develop from a cell of the nucellus or chalaza; this is also apospory.

在被子植物中。二倍体的胚胎可以从珠心或合点的细胞发育而来，这也可以被称为无孢子生殖。

Pathological change: 24 hours after operation, the brain tissue of two groups got classical pathological change of cerebral ischemia infarction. There were some mono-nucleus cells infiltrating in transplantation group while none in control group.

病理学改变：术后24 h，两组大鼠均出现典型的脑缺血梗死病理变化，自体骨髓干细胞移植组大鼠的梗死区可见少量单个核细胞，而对照组则无。

Subjects complained of unusual discharge and 20.0% complained of irregular vaginal bleeding while 34.0% with no symptoms. 4.0% patients cervix appeared grossly normal and 96% presented cervical erosion of various extents, with or without postcoital bleeding. 30.0% cases revealed abnormal cells among the 10 patients who took the Pap smear examination while the proportion is 90.0% among the 30 patients who took TCT procedure.

其中48例平均初次性生活年龄21.9岁，46.0％的患者主诉白带异常，20.0％主诉阴道不规则流血，34.0％患者无明显不适主诉。4.0％患者妇科检查未见异常，其余96％患者表现为不同程度宫颈糜烂，伴或不伴接触性出血。10例患者行巴氏涂片，仅30.0％提示异常，30例患者行新柏氏液基薄层细胞学检查，90.0％发现异常细胞。

METHODS: The subcutaneous adipose tissue was obtained from adult New Zealand rabbits under aseptic condition, and cultured in vitro with collagenase digestion. All cells were divided into 3 groups: in the BMP-2 group, cells were cultured with medium containing 0.1 g/L vitamin C, 10 mmol/Lβ-sodium glycerophosphate and 10μg/L BMP-2 for 10 minutes, followed by 4-14 days inoculation with density of 18×104 cells per pore. In the BMP-7 group, cells were cultured with BMP-7 with the same methods as BMP-2 group. The cells were cultured with simple culture medium in the control group.

无菌切取成年新西兰大白兔皮下脂肪，胶原酶消化法体外分离培养脂肪干细胞，分为3组：骨形成蛋白2组加入含0.1 g/L维生素C、10 mmol/L β-甘油磷酸钠、10 μg/L骨形成蛋白2的诱导培养基培育15 min，然后按18×104个细胞/孔接种，再培育4~14 d；骨形成蛋白7组培养方法基本相同，仅将骨形成蛋白2更换为骨形成蛋白7；对照组同法加入单纯培养基进行培育。

E2 can down-regulate the expression of CK mRNA in OCLs, but has no effect on the expression of RANK or CTR mRNA.

217β-E_2可下调破骨样细胞CK的表达，而对RANK和CTR表达量无明显作用。

Injury of CMC of AM group rat was not serious compared with that of BDL group. Conclusion: The results showed that there was the apoptosis of CMC of rat which appeared during OJ, and it was correspondence with the degree of the injury of myocardium.

琼脂糖凝胶电泳观察细胞凋亡特征性DNA梯状带：（1）SO组：无特异条带；（2）BDL组：梗黄6天后即有DNA ladder出现，并随着梗阻时间的延长，带型逐渐清晰、明显。

"Exposure to the sun has no direct impact on the genes, which add to the total risk of basal cell carcinoma," Stefansson said.

斯蒂芬森说：&接触太阳光对增加皮肤基底细胞癌总风险的基因并无直接影响。&

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。