正中线

In chick embryos, we identified a subpopulation of NCCs that, upon delamination, crossed the dorsal midline to colonize spatially discrete regions of the contralateral dorsal root ganglia, where they later gave rise to nearly half of the nociceptor sensory neuron population.

这些发现不但确定的一个主要来源祖细胞为疼痛和温度传感传入，而且也透露了一个先前不为人知的感官支配NCCs的移行途径，此途径中感官支配NCCs必须能构越过胚胎正中线。

Of the 26 lesions with pontine and bulbar involvement, three had no association with other lesions (Fig 2). Twelve were associated with tegmental and superior cerebellar peduncular extension, and six showed corticospinal tract involvement in continuity with an MDJ lesion. In one patient with additional telencephalic lesions, the right side of the pons was hyperintense on long TR/TE images that did not cross the midline, suggestive of an arterial lesion (Fig 3). In two patients with pontine tegmental lesions, there was an associated middle cerebellar peduncle and deep cerebellar white matter involvement (Fig 4). Two others had associated cervical lesions.

在26处脑桥延髓区病灶中，3处病灶仅限于脑桥延髓区，其它部位无病灶（图2）；12处病灶还同时伴有背盖部和小脑上脚/结合臂处病灶；6处病灶为与中脑-间脑接合处病灶相连的皮质脊髓束受累；还有1例患者除端脑见病灶外，右侧脑桥于T2像也见高信号病灶，但未超越正中线，提示可能系动脉病变所致（图3）；2例脑桥背盖部病灶的患者同时伴有小脑中脚/小脑脑桥脚和小脑深部白质受累（图4）；还有2处脑桥延髓区病灶还同时伴有颈髓病灶。

Lateral crus presented diamond-shaped or long strip,(16.21 ± 2.71) mm in length,(8.45 ± 1.72) mm in width,(1.09 ± 0.18) mm in thickness. Cephalic rim intersected lower edge of lateral nasal cartilage, and slightly covered the lower edge of the lateral nasal cartilage, so that the two were overlapped, but also only the intersection without overlapping. Lateral crus constituted the base of nasal wings. Narrow medial crus formed nasal tip and the frame of front nasal columella, showing posteroinferior curve or S shape,(13.06 ± 2.16) mm in length,(3.79 ± 0.58) mm in width,(1.02 ± 0.18) mm in thickness. The left and right medial crus in the middle were connected by connective tissue, and in the same way connected to the anterior margin of the lateral nasal cartilage.

外侧脚呈菱形或长条形，长(16.21±2.71) mm，宽(8.45±1.72 ) mm，厚(1.09±0.18) mm，头缘与侧鼻软骨下缘相交，并略覆盖侧鼻软骨下缘使二者部分重叠，也可仅相交而无重叠；外侧脚构成鼻翼大部的基础；内侧脚狭细，构成鼻尖和鼻小柱前部的支架，呈向后下的弧形弯曲或S形弯曲，长(13.06±2.16) mm，宽(3.79±0.58) mm，厚(1.02±0.18) mm；左、右内侧脚在正中线借结缔组织相连，并以相同方式连于侧鼻软骨的前下缘。

In midline, the anterior and posterior layers of the rectus sheath fuse to separate the 2 recti and form the linea alba.

在正中线，腹直肌鞘前层和后层融合形成白线，将两侧腹直肌分开。

Standard midline posterior subperiosteal dissection is carried out, extending at least 2 levels above and below the damaged vertebral body.

进行标准的后正中线骨膜分离。切口延伸到受损节段上下至少两个节段。

Methods Of 14 normal male Japanese white rabbits (aged approximately 4 months), 7 were subjected to vasal ligation near the cauda epididymidis after exposure of the testis and vas deferens via a scrotal incision, and the other 7 subjected to vasectomy after exposure of the vas in the inguinal canal through a small ventral midline incision.

正常雄性日本大耳白兔14只（约4月龄），7只经阴囊切口暴露睾丸和输精管后靠近附睾尾进行输精管结扎，另7只从耻骨联合上方的腹正中线上作一小切口，暴露腹股沟管内的输精管后进行输精管结扎。

Then animals were killed by gas embolism, aorta was separated from the beginning of aortic arch to abdominal aorta crotch. At the end of experiment, the aortas were prepared for measuration of the concentration of ceramide and cholesterol. The pathological changes and plaque area were measured.

第十周实验结束时，用气栓法处死动物，将主动脉全部取下，沿正中线剪开，摄像，同时作主动脉斑块面积分析及HE染色等主动脉病理学检测，并取血管组织用HPTLC测量血管胆固醇的含量。

17B. Now fold the belt down on that center line so that the belt is encasing the hakama.

现在将腰带沿正中线翻折下来从而腰带将袴包在里面。

Infant ; Facial nerve ; Blood supply to parotid gland

本文采用动脉灌注、手术显微镜下解剖的方法，对婴儿面神经颅外段的解剖特点以及腮腺血供进行了详细的观测，以期为临床腮腺手术提供可靠的解剖学资料。1 材料和方法选用 15具(30侧)新鲜婴儿尸体(女婴 10具，男婴 5具)，沿颈前正中线切开皮肤、浅筋

Point 3: Air Sea Point midline abdominal navel the following about 1.5 cun.

穴位三：气海穴腹部正中线肚脐以下大约1.5寸处。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。