向下生长

Results Among 38 cases of pituitary macroadenomas which had ivaded the surrounding tissue,5 cases showed the tumor growing upward simply and oppressing the optic chiasma,20 cases growing upward mainly and involving the sphenoid sadele,13 cases involving one or both sides of the sphenoid sadele mainly and ivading up or／and down.

结果：5例肿瘤单纯向鞍上生长压迫视交叉，20例以向上生长为主并有鞍旁受累，13例以向一侧或两侧鞍旁生长为主并向上或向下侵犯。

ResultsFour cases are huge mass of solid oval with integrity of coat and smooth, clear edge; they grow at the right middle or right posterior inferior mediastinum, along the spine, no expansion of intervertebral foramen and down to enter into crura of diaphragm; their density are less uniform, in two masses with a sand calcification image. In plain scanning, the CT values is 23~33Hu; in dynamic state enhancement scanning of 4 cases the mass are not enhanced or not obviously strengthened at arterial phase, and have a linear strengthen at venous phase.

结果4例均为巨大实性椭圆形肿块，肿块包膜均完整，边缘光滑清晰；4例肿块分别位于右后中下和右后下纵隔，均沿脊柱生长，无椎间孔扩大，向下伸入膈脚后；4例肿块密度均欠均匀，2例肿块伴有一砂粒状钙化影，平扫时CT值为23～33 Hu；动态增强扫描时动脉期4例肿块均呈无强化或强化不明显，静脉期4例肿块内均见有一条线形强化。

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

Results:(1)The primary cells in cultured were observed from the edge of the cultured tissues after 10-15 days. The cultured cells were round , oval, fusiform and multiangular.

结果(1)组织块培养10-15天后可见细胞从其边缘向外生长，倒置显微镜下呈梭形、圆形、椭圆形，并有多个突起，电镜下可见表面有较多的微绒毛，细胞间缝隙连接，胞质内见较多次级溶酶体。

Its mechanism is downward and backward rotation of the mandible, the retrusion of the lower incisors, the protrusion of the upper incisors and the forward growth of maxilla.

FR-Ⅲ是矫治替牙期前牙反的理想方法之一，其机理是下颌骨向下、向后旋转，舌倾下切牙，唇倾上前牙，促进上颌骨向前生长。

The main changes were the downward and backward rotation of the mandible, the retrusion of the lower incisors, the protrusion of the upper incisors.FR-Ⅲ also promotes the growth of maxilla and reaches the normal relationship of the anterior overjet and overbite.

结果：FR-Ⅲ能矫正上下颌基骨异常的矢状关系，主要变化是下颌骨向下、向后旋转，改变下颌骨生长的方向，同时使下颌切牙舌倾、上前牙唇倾，上颌骨向前生长。

The pollen tube may grow down the stylar canal , or it may secrete enzymes that digest the tissue of style , creating a path for the tube .

花粉管可能沿着花柱道向下生长，也可能分泌消化酶分解花柱组织，为花粉管创造一个通道。

We report 2 cases of classic vulval intraepithelial neoplasia with collections of cells throughout the full epithelial thickness and within epithelial downgrowths containing intracytoplasmic mucin.

我们报道了2例女性外阴经典型上皮内瘤变，这2例病变的表面上皮全层和向下生长的上皮细胞巢团内可见富含黏液的上皮细胞。

Adnexal structures, particularly follicles and eccrine sweat units, originate during the third month of fetal life as downgrowths from the developing epidermis.

从胎儿的第3周，皮肤的附属结构，特别是毛囊和小汗腺单位，自正在发育的表皮向下生长。

Blooms hang upside down like Chinese lanterns, luring bees into an elaborate pollen chamber.

花朵向下生长就好像一个灯笼，将蜜蜂吸引到精心打造的花粉室。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。