鞘的

Inflorescence terminal on pseudostems or on separate, short, sheath-covered shoots arising from rhizomes, cylindric or fusiform, sometimes globose, lax to dense, few to many flowered, sometimes with bracteolate cincinni in bract axils and then a thyrse, sometimes a raceme or spike; bracts and bracteoles present, often conspicuous, colored.

在单独，短，鞘盖住的笋上的或的在假茎上顶生的花序起因于根状茎，有时球状，圆筒状或纺锤形，疏松对紧密，少数到多花的，苞片和小苞片有，通常明显，有色。

Culms 2–5 m, 5–12 mm in diam.; internodes terete, 20–32 cm, pith spongy; nodes weakly prominent, sheath base persistent, corky, glaucous, pilose; intranode ca. 9 mm. Culm sheaths persistent or late deciduous, brown, shorter than internodes, fragile, densely setose; auricles falcate; oral setae ca. 5 mm; ligule arcuate, ca. 2 mm; blade triangularly ovate-lanceolate, abaxially slightly hairy at base.

秆2-5米，5-12毫米直径；节间圆柱状，20-32厘米，木髓海绵状；节身体虚弱突出，宿存的鞘基部，木栓质，有白霜，； intranode约晚落叶的9毫米竿箨宿存或，棕色，节间，脆的短于，密被刚毛；叶耳镰刀形；口头的刚毛约5毫米；弧曲的叶舌，约2毫米；叶片三角形卵状披针形，背面的稍有毛在基部。

Leaves undeveloped, tuberculate, ca. 1 mm, base convex, decurrent, adnate to branch, distally touching base of next higher leaf, apex obtuse; leaves of branchlets sheathing and amplexicaul at base.

不发达的叶，具瘤，约1毫米，凸，下延的基部，贴生于分枝，上部与上面的临近叶的基部接触，先端钝；小枝具鞘和抱茎的在基部的叶。

Leaves 1 or 2 per ultimate branch; sheath margins ciliolate; auricles absent, oral setae few, 1–2 mm; ligule truncate, ca. 0.4 mm; blade linear-lanceolate, 4–9.4 × 0.5–0.9 cm, glabrous, secondary veins 2- or 3-paired, transverse veins obscure, base cuneate, one margin spinescent-serrulate, other margin obscure.

每末级的分枝留下1或2；鞘边缘具短缘毛；叶耳无，口头的刚毛少数，1-2毫米；叶舌削去，大约0.4毫米；叶片线状披针形， 4-9.4 * 0.5-0.9 厘米，无毛，2或3配对的次脉，不明显的横向脉，基部楔形，具刺有细锯齿的一边缘，不明显的其他边缘。

Objective to evaluate the functional recovery of acute spinal cord injuried rats treated with exogenous wnt-3a signal protein administration and to explore its mechanism.methods moderate spinal cord contusion injury was made in 40 adult sprague dawley rats at t10.twenty rats served as contusion controls(group 1).twenty rats were treated with wnt-3a for three days after injury (group 2).the functional recovery of the rats was observed through basso,beattie,bresnahan open field locomotor score.rats were killed at 14 or 28 days after injury,then spinal cords were removed for histopathological examinations,and the expression of the bromodeoxyuridine plus neural cell markers was stained with immunohistochemical method.results rats of two groups receiving a contusive injury recovered substantial function within 1 week.by 28 days,rats in groups 2 scored 7.0 points better on the bbb scores than rats in group 1 group 2=16.94,after 28 days vs.

目的 研究外源性wnt-3a信号蛋白对脊髓损伤的修复作用，并探讨其作用机制。方法取40只成年雌性sd大鼠在t10节段制备适度脊髓挫伤模型。随机从中取20只为损伤对照组(group 1)，另外20只为损伤治疗组(group 2)。脊髓损伤3天后用wnt-3a蛋白治疗。这些大鼠的功能恢复通过basso、beattie、bresnahan开放视野运动评分来观察。这些大鼠分批在损伤后14天或28天被处死，取出损伤节段脊髓用来组织病理学检查，同时用5-溴脱氧尿嘧啶核苷和神经细胞标记物进行免疫组化染色。结果两组大鼠在伤后一周运动功能有明显的恢复。不过，到损伤后28天，我们观察发现，损伤治疗组中的大鼠bbb评分比损伤对照组中的评分高出7.0分左右(group 2∶16.94±1.18，group 1∶9.89±1.29；p.05)，光镜和电镜检查发现wnt-3a蛋白对髓鞘形成和轴突再生有一定的修复效果。

Culms rigid, branched at base and covered with leathery yellowish sheaths, 80–100 cm tall, ca. 7 mm in diam. Leaf sheaths glabrous; leaf blades flat or inrolled, tough, 18–30 × 0.4–1 cm, adaxial surface and margins scabrid, abaxial surface rather smooth, apex long acuminate; ligule ca. 0.3 mm. Inflorescence 20–60 × 2–3 cm; racemes ascending or spreading, crowded or spaced, 0.5–3.5 cm; main axis and rachis hispidulous.

秆硬质，在基部分枝并且为所覆盖的革质淡黄鞘，厘米高，无毛的直径约7毫米叶鞘；叶片平或内卷，坚韧， 18-30 * 0.4-1 厘米，正面和给镶边，背面相当清除，先端长渐尖；大约0.3毫米开花的叶舌 20-60 * 2-3 厘米；总状花序上升的或开展，密集的或隔开，0.5-3.5厘米；主轴和轴具短硬毛。

Results: ApoD was observed positively expressed in type2 astrocytes and oligodendrocytes from O2A lineage, while it was not expressed in type1 astrocytes from T1A lineage. Accordingly, we can verify the phenomenon found in the study of T1A and T2A gene different expression profile that ApoD mRNA was highly expressed in T2A and lowly expressed in T1A. Conclusion: It can be concluded that lipid metabolism related genes such as ApoD play important roles in the generation and differentiation of O2A lineage, which closely correlate with internal mechanism of lipid metabolism in the brain and myelogenesis.［Key words］astrocyte(T1A, T2A); oligodendrocyte; O2A lineage; apolipoproteinApoD

我们已采用基因芯片技术在mRNA水平研究两型星形胶质细胞的基因表达谱差异，发现ApoD在2型星形胶质细胞中差异高表达，故本文拟用激光共聚焦双重免疫荧光标记技术进一步在蛋白质水平观察ApoD在体外分化成熟的两型星形胶质细胞以及少突胶质细胞中的表达情况，以期为我们深入研究ApoD等脂代谢相关基因在脑内脂质代谢和神经髓鞘发育机制中所起的作用提供有用的实验依据，依此探讨胶质细胞发生和分化的信号机制。

Background: Peripheral nerve injury is common and serious in clinically. According to the nerve regeneration theory of nerve tropism, neural regeneration room became hot spot for treating nerve injury.Then keep distance between the proximal and distal severed stumps with different conduits and others substance which can promote nerve regeneration ,the room can provid a favourable environment for nerve regeneration. a series of empirical study indicated immunosuppressant FK506 can promote nerve regeneration, chitosan is polysaccharose natural biomaterial , Chitosan is prepared by the N-deacetylation of chitin.

背景：周围神经损伤在临床上比较常见，根据神经趋向性再生理论，神经再生室成为神经损伤治疗研究的热点，即在神经断端之间留出一定的间隙，并套以不同材料的鞘管及其它促进神经再生的物质，为周围神经再生创造良好的再生环境，一系列实验研究表明免疫抑制剂FK506有促进神经再生的作用。

Culm internodes uniformly pruinose; sheath scars yellow setose initially; leaf blades 0.6–1.5(–2.1) cm wide, abaxially proximally gray-yellow pubescent by midrib and on pseudopetiole.

节间均匀具粉霜的Culm；黄具刚毛的鞘痕最初；通过中脉和在假梗上的叶片0.6-1.5(-2.1)厘米宽，背面的下部的灰黄色的短柔毛。

Lowermost leaf sheath retrorsely strigose at base, uppermost sheaths closed 1/6–1/3 of length; blade grayish green, flat, folded, or involute, papery, 2–8 mm wide, abaxially smooth, adaxially nearly smooth to densely scabrid along prominent veins, apex slender prow-tipped; ligule white or off white to brownish or yellowish, membranous-papery.

最下的叶鞘反曲的具糙伏毛的在基部，最上部的鞘关闭长度中的1/6-1/3个；叶片灰绿色，平，折叠，或内卷，纸质，毫米宽，背面平滑，正面近平滑兑一沿着突出脉浓密粗糙，叶舌白色或者离或者淡黄，膜似纸白色的到带褐色。

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。