共查询到20条相似文献，搜索用时 62 毫秒
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探讨不同脱钙液对新西兰大白兔膝关节切片染色效果的影响,为膝关节关节软骨及基质多糖的观察奠定试验基础。取正常新西兰大白兔膝关节,10%中性福尔马林溶液充分固定,流水冲洗后,分别浸入10%硝酸脱钙液、3%硝酸脱钙液、改良AF硝酸脱钙液及改良30%盐酸脱钙液中进行充分脱钙后,流水冲洗,制作石蜡切片,苏木精—伊红(HE)、奥尔辛蓝及沙红O染色,显微镜检观察并评价其效果。结果表明:①HE染色效果,3%硝酸组＞30%盐酸组＞10%硝酸组及改良AF硝酸组;②奥尔辛蓝及沙红O染色效果,3%硝酸组及改良AF硝酸组优于其他各组。 相似文献
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该研究旨在提供一种在较低室温下快速制作大鼠踝关节石蜡切片的方法,以期为大鼠关节炎的病理组织学评价提供重要技术支持。取类风湿关节炎模型(CIA)大鼠踝关节,经10%中性缓冲福尔马林溶液固定2 d,流水冲洗后,分为室温脱钙组和恒温脱钙组,两组均采用8%硝酸脱钙液脱钙,制作石蜡切片,采用HE染色法染色后,光镜下观察并评价其效果。结果表明,不同温度脱钙组制片后均能获得平整、染色良好的石蜡切片,可实现对关节的组织学评估,但恒温脱钙组脱钙完成时间明显短于室温脱钙组,可作为冬季较低室温条件下快速制备切片的脱钙方法。 相似文献
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《黑龙江畜牧兽医》2020,(2)
为了明确鹿角脱盘和鹿角柄的较优脱钙方法,试验采用9种不同组织脱钙液对鹿角脱盘及鹿角柄进行脱钙,比较脱钙效果及组织形态和H.E.染色效果,综合分析筛选适合于鹿角脱盘、鹿角柄的脱钙方法。结果表明:在脱钙时间方面,采用脱钙液Ⅸ时间最短,脱钙液Ⅶ较短,采用脱钙液Ⅰ脱钙时间最长;在组织外观完整性方面,采用脱钙液Ⅰ脱钙后鹿角脱盘和鹿角柄外观最完整,脱钙液Ⅸ对组织损伤最大,脱钙液Ⅶ取相对完整的碎块组织制作了石蜡切片,切片视野清晰;在显微组织完整性方面,采用脱钙液Ⅰ和脱钙液Ⅶ脱钙后鹿角脱盘和鹿角柄组织较为完整;在H.E.染色效果方面,脱钙液Ⅰ的染色效果最好,脱钙液Ⅱ和脱钙液Ⅶ染色效果也较好。说明脱钙液Ⅶ对组织损伤小,脱钙效果好且脱钙时间短,切片染色效果较好,适合于常规条件下鹿角脱盘及鹿角柄脱钙;在脱钙时间充裕的情况下建议选择脱钙液Ⅰ对鹿角脱盘和鹿角柄进行脱钙,对组织损伤最小,脱钙效果最好,切片染色效果也好。 相似文献
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为观察绵羊正常卵巢组织的形态结构，采用苏木精-伊红（hematoxylin-eosin ，HE）染色法制作绵羊卵巢组织石蜡切片。结果显示，在切片制作过程中存在的问题主要包括染色不均、染色对比不明显、过度染色、染色过浅和切片出现斑点等。在试验过程中可通过充分分化、蓝化、充分水洗等因素的控制来提高切片的染色效果，该方法可为动物卵巢及卵泡染色切片制作提供技术指导。 相似文献
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针对牙齿组织形态学研究的难点,选择适宜固定液,用EDTA-2Na进行脱钙,完成了牙齿组织石蜡切片的制作。通过确定染色程序及各种染料的最佳作用时间,分别利用Masson三色染色法、传统的苏木精和伊红（HE）染色法对牙齿组织切片进行了染色观察。染色结果表明,与HE染色法相比,Masson三色染色更能使牙齿的各主要成分以不同颜色显现出来,色彩对比鲜明,亮丽润眼,为牙齿组织生理及病理组织形态学研究奠定了基础。针对机体中硬组织的相似特性,该试验方法可以在骨骼、软骨等硬组织的形态学研究中参考、改进并推广使用。 相似文献
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快速HE染色切片制作 总被引：2，自引：0，他引：2
苏木精和伊红染色方法 (简称HE染色 )是生物学和医学领域中组织学和细胞学等学科中最常见的切片染色方法。染色质量的好坏直接影响到细胞观察的科学性和病理学诊断的准确性。但在一些特殊情况下 ,在保证切片质量的前提下需要进行快速石蜡HE染色切片。经过长时间的石蜡切片HE染色的制作实践 ,对实验室不具备自动脱水机和自动染色机的HE染色切片快速制作方法进行了如下的总结。1 石蜡切片的快速制作常规 (普通 )快速包埋法 :此方法快速而且制片的效果很好 ,整个过程一般在 10～ 15min完成。过程如下 :①取材、固定、脱水 :取材小而薄 ,组… 相似文献
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石蜡切片和H.E.染色,是组织学的最基本的技术之一,至今已使用了100多年[1].石蜡切片是目前组织标本制作的方法之一,其特点是可进行多种染色,细胞及组织层次感好,且能长期保存完好的组织形态[2].石蜡切片制作和染色过程中涉及的因素很多[3],各个环节均需要操作者根据所制作的组织不同严格筛选试验条件[4].已有大量文章进行石蜡切片方法学的研究,如组织固定不充分,会导致切片灰染[5],脱蜡不彻底导致染色不良[6-7],伊红复染时,要根据使用次数调节复染的时间[8]等,但并没有专门针对胚胎组织石蜡切片制作方法探讨的相关文章.本文选取脾脏为代表器官,目的是通过摸索制作鸡胚脾脏石蜡切片中脱水、透明、浸蜡、切片与染色的最佳条件,探讨制作优质鸡胚组织石蜡切片的方法. 相似文献
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卡氏肺孢子虫肺炎动物模型建立及病原体的形态观察 总被引：3，自引：0，他引：3
Wistar大鼠、小鼠、家兔和野生鼠用皮下注射醋酸可的松建立卡氏肺孢子虫肺炎的动物模型。解剖,取肺脏制作涂片、印片和石蜡切片,经染色进行病原体形态观察。结果显示野生鼠卡氏肺孢子虫感染率最高,为81．3％;Wistar大鼠感染率其次,为56．3％;小鼠为25％;家兔为12．5％。支气管肺泡灌洗液涂片和肺组织印片用姬姆萨染色后,可见卡氏肺孢子虫的囊内小体和滋养体。肺组织切片用哥氏银、甲苯胺蓝染色后,可见清晰的卡氏肺孢子虫的包囊壁。 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献