向细胞性

The characteristical time-dependent expression of transcriptional factors HNF4α, C/EBPα, and C/EBPβ during the hepatocyte differentiation by bone marrow stem cells demonstrates that the expressions of these transcriptional factors are closely related to the initiation and maintenance of hepatocyte differentiation.

结论在肝细胞分化过程中，转录因子HNF4α、C/EBPα和C/EBPβ呈特征性时序表达，表明骨髓间充质干细胞在向肝细胞分化时，肝细胞相关转录因子的表达与细胞分化的启动和维持密切相关。

Aggressive fibromatosis is a disease of benign ,clone hyperplasia of fibrocyte.β-catenin,which starts downstream gene transcription,was found concentrated in cell nuclei in sporadic patients.

侵袭性纤维瘤病是一种良性克隆性纤维细胞增生疾病，在散发病人的组织病理切片中发现β-catenin向细胞核内浓聚，即向核内转移启动下游基因转录。

Clinical Efficiency of Meningococcus Group A Capsular Polysaccharide Vaccine in Children Three Months to Five Years of Age Cellular and Humoral Components of Monocyte and Neutrophil Chemotaxis in Cord Blood Oral non-absorbed Antibiotics Prevent Infection in Acute non-lymphoblastic Leukemia Aspirin-induced Hepatotoxicity and Its Effect on Juvenile Rheumatoid Arthritis Prediction of Morbidity in Hemophilus Influenzae Meningitis Neurological Sequelae in Children Surviving Mechanical Ventilation in the Neonatal Period Developmental Effects of Prolonged Pregnancy and the Postmaturity Syndrome Long-term Outcome of Hemophilus Influenzae Meningitis Related to Antibiotic Treatment Recommendations for a National Policy on Poliomyelitis Vaccination Impaired Humoral Immunity in Treated Hodgkin's Disease Development of Immune Response during Typhoid Fever in Man In Vitro Susceptibility of Recently Isolated gram-negative Bacteria to Gentamicin, Sisomicin, Tobramycin, and Amikacin Studies of Urticaria and Acute Serum Sickness with the CI Precipitin Test Epidemic Measles in a Highly Vaccinated Population Congenital Chloride Diarrhea Acute Parotitis Associated with Influenza, Type A: Twelve Cases Urinary Tract Infection in high-risk Newborn Infants Maternal ABO Blood Group Type B: A Risk Factor in the Development of Neonatal Group B Streptococcal Disease

脑膜炎双球菌A羣被囊多醣类疫苗接种在3个月到5岁大小孩之临床效果脐带血内单核球及嗜中性球化学向性之细胞成分及体液成分口服不被吸收的抗生素可预防性急非淋巴球性白血症病人罹患感染阿斯匹灵引起之肝毒性及其对幼年性风湿样关节炎之影响流行感冒杆菌脑膜炎预后之预测新生儿时期接受人工呼吸器其日后神经系统上之后遗症过期妊娠及过度成熟徵候对发育之影响流行感冒杆菌脑膜炎之长期预后与抗生素治疗之关系对"小儿麻痹预防接种的国家政策"的建议 Hodgkin's disease治疗后体液免疫之缺损伤寒患者免疫反应的研究目前分离出来的革兰氏阴性菌在体外对Gentamicin，Sisomicin，Tobramycin和Amikacin之感受性荨麻疹和急性血清病CI沉淀素试验的研究在大多数接种人羣发生的麻疹流行先天性氯腹泻与influenza A型病毒有关的急性腮腺炎：12病例报告高危险性新生儿的尿道感染母亲血型B型：为新生儿发生B羣链球菌疾病之个危险因素

CaB plays a significant role in differentiation of pulp cell to odontoblast, as well as formation of reparative and reactive dentin.

CaB可能在牙髓细胞向成牙本质样细胞分化及修复性牙本质和反应性牙本质形成过程中起重要作用。

Horny pearls and parakeratosis cells in cancerous nests centres were stained negative. The positive cells were distribution of mass, even diffusion, in moderate and poor differentiation.

在恶性度较高的肿瘤中阳性细胞呈团块状或片状灶性分布，甚至于呈弥散性分布，在肿瘤向周围组织浸润的边缘区阳性细胞最为密集。

The biomechanical tests showed that two kinds of artificial bones had not significant difference on compressive strength and Young\'s modulus(P＞0.05),while the flexural strength of nano-nacre artificial bone was less than the control group(P＜0.05).3.The results of CCK-8 showed that the difference were not significant in each group,the proliferation of osteoblast reached the peak at the 5th day;7 days after being co-cultured,the total protein content of study group was higher than control group and blank group(P＜0.05),while the difference between control group and blank group was not significantP＞0.05The difference of alkaline phosphatase activities among three groups was not significant(P＞0.05The SEM view showed that osteoblast attached and grew well in two kinds of artificial bone.4.X-ray photography showed that two kinds of powder started to degrade in 2 weeks;this phenomenon became more appear in 4 weeks,nano-nacre powder degraded faster than micron-nacre powder,while the hole shadow was easy to be found;in 8 weeks,all the femoral holes recovered and returned to normal bone mineral density in all groups.Analysis of tetracycline fluorescent double marks in the hard tissue grinding slices indicated that new bone grew fastest around the bone defect area in study group,while most slowly in blank groupP＜0.05 SEM(scanning electron microscope observation showed that nano-nacre powder degraded more quickly.The same result can be found through the demineralized sections morphometric analysis,and both of the composite artificial bones made from those two kinds of nacre powder had the good connection with the adjacent tissue in rats body without apparent inflammatory response.5.X-ray photography showed that rabbit\'s bone defects healed faster in study group since NNAB implanted than in control group since MNAB implanted.At 24 weeks after operation,bone density in radial defects had nearly accessed to the normal area,while lower in control group,and turned up nonunion in blank group;The checking of BMD showed that results in study group were higher than those in control group at 8,16 and 24 week(P＜0.05), and the difference between the BMD values in study group at 24 week and those in blank group was not significant(P＞0.05).The gross specimens showed satisfactory histocompatibility both in study group and in control group,with bone tissue growing from two sides into the center of implanted materials; Normal slices in HE stain and hard tissue grinding slices in Stevenel\'s blue/Van Geison\'s picro-fuchsin stain showed that the bone growth tendency was better in study group than that in control group,and the medullary cavity had been penetrated to the implanted materials in study group at 24 week;Analysis of tetracycline fluorescent double marks in the hard tissue grinding slices indicated that new bone in both groups grew fastest 8 weeks after surgery,while slow down at 16 week.

纳米珍珠层/消旋聚乳酸复合人工骨与微米珍珠层/消旋聚乳酸复合人工骨分别与成骨细胞共培养后，其各时间点CCK-8法检测值与空白对照无显著差异(P＞0.05)，成骨细胞均在第5天达到增殖高峰期；培养7天后，实验组细胞蛋白含量高于对照组及空白组(P＜0.05)，后两者之间则无显著差异P＞0.05碱性磷酸酶活性在三组间均无显著差异(P＞0.05电镜下可见成骨细胞在两种人工骨上都有良好生长贴附能力。4.X-ray显示两种粉体在大鼠股骨骨洞植入第2周时都开始出现了降解，第4周时更为明显，纳米珍珠层粉较之微米珍珠层粉降解更快，而空白对照组骨洞阴影仍可见，至8周时，则所有组骨洞均己闭合修复，X-ray下已不可见原钻孔痕迹，恢复正常骨质密度；硬组织磨片四环素荧光双标记结果显示纳米珍珠层粉植入组较其余两组在骨缺损区周围新骨生长速度更快，空白组速度最慢P＜0.05电镜观察及常规脱钙切片亦可见到纳米粉体降解较快；由以上两种原材料制得的纳米珍珠层/消旋聚乳酸复合人工骨与微米珍珠层/消旋聚乳酸复合人工骨在大鼠体内均与周围组织结合良好，无明显炎症反应。5.X-ray显示纳米珍珠层/消旋聚乳酸复合人工骨植入兔桡骨缺损区后其骨愈合速度较对照组微米珍珠层/消旋聚乳酸复合人工骨植入的快，至植入术后24周，实验组骨缺损区接近正常骨密度，对照组骨缺损区密度较低，空白组则呈现骨不连状态；骨密度测量结果显示术后8周、16周、24周实验组的骨密度值高于对照组(P＜0.05，24周实验组的骨密度值与术前所测得的正常值无显著性差异P＞0.05动物取材大体所见均显示组织相容性良好，骨组织逐渐由植入材料两端向中央生长；常规切片HE染色及硬组织磨片Stevenel\'s blue/Van Geison\'s picro-fuchsin联合染色均可见实验组骨缺损区长势优于对照组，至术后24周，实验组骨髓腔与材料已呈相交通状；硬组织磨片荧光显微镜下观察，两组材料在术后8周处于骨生长最快速时期，16周时速度开始减慢，术后4、8、16周时实验组的新骨生长速度均较对照组的快

When pea ( Pisum sativum L.,Alaska strain) was grown in short\|day conditions,the apical bud senescence started with the transformation of the bud from vegetative to reproductive growth.DNA fragmentation was detected during the senescence using the terminal deoxynucleotidyl transferase\|mediated dUTP nick end in situ labeling method.The cell ultrastructural changes were similar to apoptosis in animal cells:the apical meristemetic cells underwent the programmed cell death.This wa...

显微、超微结构研究表明，短日照条件下豌豆顶芽的衰老过程是从营养生长锥向花芽的转化，而用DNA原位末端标记、Caspase 8WesternBlot和 14 0bpDNA片断积累的试验结果证明，转化为花芽的整个生长锥细胞发生了编程性死亡，而且其最顶端部分细胞首先发生PCD ，而顶端周围的分生组织细胞逐渐分化出花芽的各部分，但顶芽最后并没有发育成为完整的花，所有细胞就都发生PCD ，从而顶芽衰老

The results show that a large number of cone cells distributes in the central area of retina, and the number of cell in outer nuclear layer and ganglion cell layer is approximate, and the protuberances of pigment epithelium cells extend to cones and rods layer, which suggest that Zoacys dhumnades is diurnal habitual species.

结果表明，乌梢蛇视网膜中央区分布着大量的视锥细胞，外核层与节细胞层的细胞数量相当，色素上皮层的细胞有许多突起伸向视杆视锥层内，说明乌梢蛇是一种昼行性蛇类。

METHODS: After isolated the PBMCs and blood-plasma from adult human peripheral blood by Ficoll-Hypaque centrifugation, the PBMC culture procedure with or without the self-blood -plasma was applied to polarize T cells in vitro , these cells were polarized by PHA(20 mg/L),non-PHA respectively.

用Ficoll-Hypaque梯度离心法分离出正常成人抗凝外周血单个核细胞和血浆，将PBMC置于含或不含有自身血浆环境中，并在植物血凝素(PHA ，2 0mg L)的刺激下进行培养，培养 2 4、48、72h后收获细胞，分别用双色免疫荧光标记，以流式细胞术对CD4+ T细胞表达表面分子CCR3、CCR5进行分析。结果：CD4+ T细胞受自身血浆和PHA刺激后向Th1 Th2两个方向极化，2 4、48、72h后极化率分别达到(13 2 8± 1 5 9)%(12 70± 1 6 5 )%、(17 19± 1 0 3)%(17 5 0± 1 30 )%、(19 49± 2 87)%(18 5 8± 1 49)%；而只有PHA刺激的极化率很低，两组有显著性差异(P 0 1)；Th1∶Th2之比约等于 1。

The animal model of this method system have, the characteristics of the high fat, high leptin, high Ins, and match with the characteristic of clinical and the pathologic of simple obesity. This studies showed: The acupuncture can obviously reduce the vaule of intaking food and water of the fat rats, and lower the body weight and fat; The acupuncture can urge the diameter, area, physical volume of white fat cell contract, Brown fat tissue of fat rat group surroundings vascular containing large quantity of white fat cell, the acupuncture group was less. this showed: The acupuncture enhanced the white fat cell metabolism, and promotesed the white fat cell to convert to brown fat cell; The frequency of spontaneous electric of nerve cell of pvn of the fat rat is high, the acupuncture counld depress the spontaneous electric of nerve cell of pvn, This showed: the acupuncture can depress the appetite passing to adjust function of pvn nerve; The monoaminergic neurotransmitter of inside of the fat rat brain is disfunction, the acupuncture can rectify this disfunction, and adjust level of 5-HT, and affect appetite, and improve metabolism; The level of leptin and Ins of fat rat increased high, The level of it of acupuncture group decreased, compared with the fat group p.001, This showed: the fat rats have the defeat of leptin and Ins in the body, The acupuncture can lowering this defeat, The level of leptin and Ins of the fat rat in the brain is less than the normal group, The level of leptin of the acupuncture group is high than the fat group, This showed: the acupuncture can increase the transportation of leptin from blood to brain.

本方法所制肥胖大鼠模型具有高体重、高脂、高leptin和高Ins血症的特点，符合人类单纯性肥胖病的临床和病理特征；实验研究显示：针灸能明显减少肥胖大鼠的摄水、摄食量及降低其体重、体脂；针灸能促使白色脂肪细胞直径、面积、体积缩小，减少肥胖大鼠棕色脂肪组织血管周围白色脂肪细胞数量，显示：针灸增强了白色脂肪细胞的代谢，促进了白色脂肪细胞向棕色脂肪细胞的转化：肥胖大鼠PVN神经细胞自发放电频率增加，脑内单胺递质紊乱，针灸通过抑制PVN亢奋的自发放电，调整5-HT水平，达到影响食欲，改善代谢的作用；肥胖大鼠血中leptin及Ins水平增高，与正常组大鼠比有明显差异，提示大鼠体内存在leptin及Ins抵抗，针灸后肥胖大鼠随着体重体脂的下降，血中leptin、Ins水平降低，与肥胖组比均有显著性差异，而针灸后大鼠脑内leptin增加，与肥胖组比P.05，提示：针灸具有改善leptin、Ins抵抗及增加leptin脑内转运的作用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。