快速HE染色切片制作

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…     

羊血涂片五种染色方法的比较

血涂片的显微镜检查是血液细胞学检查的基本方法,临床上应用极为广泛,特别是对于各种血液病的诊断具有重要的价值[1-3]。近年来,随着血细胞分析仪的广泛应用,血涂片的观察也可作为判断仪器检查结果的简易方法。血涂片的制作是一个基本实验操作,制作出染色清晰、对比鲜明的血涂片是人们一直追求的目标。染色的好坏固然与涂片的好坏有关,但染色方法的选择对染色效果是至关重要的。血涂片染色[4]是医学检验中最常用、最重要的项目,染色     

不同保存期吸虫标本胭脂红染色时间的比较

将采集的小、中、大型液浸吸虫标本按不同保存期10d,5-10年，15－20年用胭脂红进行染色，比较最佳染色时间。结果，小型虫体保存10d以内其染色时间不超过20min，5－10年和15－20年约为30min；中型虫体保存10d以内其染色时间约为40min,5-10年和15－20年约为180－210min；大型虫体保存10d以内其染色时间约为90min,5-10年和15－20年约为240min。     

白菊染色技术初步研究

本试验采用白菊花为试验材料,以果绿、胭脂红、日落红、柠檬黄四种可食用色素作为染料分别存装在瓶中,以不同浓度处理条件进行比较染色试验。结果表明:试验的四种色素都可以使白菊花着色,但花瓣开始着色和达到最佳效果时间及染色效果存在明显差异。     

姊妹染色单体互换技术的应用

<正> 染色体是细胞核内遗传信息的载体,在DNA合成期(S)对,细胞内所有染色体都进行复制,染色体数目加倍,但是两条染色单体的着丝粒仍然连在一起,称这样两条染色单体为一对姊妹染色单体,姊妹染色单体进行DNA复制的产物交换,称为姊妹染色单体互换(SCE)。这是一种十分重要的细胞遗传学现象,它不仅涉及到DNA的     

猪三毛滴虫长春株不同染色方法的比较

将从长春地区腹泻仔猪盲肠中分离得到的猪三毛滴虫用1640培养基短期培养后,使用碘染色法、瑞氏染色法、姬氏染色法、姬氏-瑞氏复染法、Weigere铁苏木素染色法和鞭毛染色法染色分别对其染色,观察不同虫体形态结构,并比较了不同染色方法的染色效果。结果显示,姬氏染色、瑞氏-姬氏复染和鞭毛染色法对猪三毛滴虫染色效果较好,可获得虫体形态完整、结构清晰的染色标本。     

涂片、染色与镜检

涂片染色镜检是一种既方便又快捷又具经济效益的实验室微生物检验方法，在基层畜牧兽医工作中，尤其是对于细菌和寄生虫方面的检查检验工作，具有重要的作用。现将涂片染色镜检基本步骤系统地连贯起来。     

提高猪精子染色效果的方法及注意事项

精子畸形率为评定猪精液品质的重要指标,精子畸形率≤20％才合格.精子畸形率过高将直接影响到猪人工授精的受胎率.笔者通过总结姬姆萨染色制片过程中的经验体会,提出了能够提高精子染色效果的方法,通过提高制片染色质量提高精子畸形率检查的准确度,能够减少由于制片染色不当造成的误判.     

猪附红细胞体几种染色方法的比较

为了筛选出比较理想的染色方法,使猪附红细胞体病的诊断和研究得到可靠的技术保证,本试验对附红细胞体病猪的同一份血液样本,分别采用了12种染色方法进行染色,并比较其染色效果。结果显示,丫啶橙染色和姬-瑞氏混合液染色效果最好,其次为亚伯特氏、瑞氏和姬姆萨氏等染色方法。     

小型绦虫染色标本的制作与观察

为了解小型绦虫的最佳染色方法及膜壳属绦虫的形态结构,采用4%孔雀绿水溶液、欧氏苏木素溶液、德氏苏木素溶液、7%醋酸卡红溶液、明矾卡红、硼酸卡红、盐酸卡红、明矾品红、伊红、红墨水、蓝墨水、黑墨水稀释液共12种染色液制作鸡膜壳绦虫的染色标本,观察其结构特征。结果表明,采用蓝墨水和红墨水染色简便快捷、着色均匀、结构清晰、颜色鲜亮。膜壳属绦虫的未成熟体节可见着色深的雄性生殖器官,每个成熟体节可见一个生殖孔,开口于节片的单侧,孕卵体节可见子宫;染色结果丰富了膜壳属绦虫的形态学资料。小型绦虫使用改进的染色法制片步骤简化、效果好。     

用台盼兰—姬姆萨染色检测家畜精子顶导反应的研究

本文探讨了用台盼兰—姬姆萨染色检测家畜精子顶体反应的可行性。用肝素或钙离子载体诱发精子顶体反应。根据染色结果将精子分为四类:a)核后帽部不着色或淡青色,顶体不着色或部分紫红色(有顶体反应活精子);b)核后帽部暗青色.顶体部不着色或部分暗红色(有顶体反应死精子);c)核后帽部不着色或淡青色,顶体部紫红色(无顶体反应活精子);d)核后帽部暗青色,顶体部暗紫红色(无顶体反应死精子)。有顶体反应活精子百分率与仓鼠卵穿透率呈强正相关。从而证明台盼兰—姬姆萨染色是检测家畜精子顶体反应的有效手段,并能预测获能处理后精子的受精能力。     

On the Use of the Perineal Stain as an Index of Sexual Maturity and Breeding Condition in the Male Greater Cane Rat,Thryonomys swinderianus,Temminck

The efficacy of the perineal stain as an index for sexual maturity and breeding condition in the male greater cane rat, Thryonomys swinderianus, Temminck, was investigated in 34 animals collected from hunters' kills in the Ekumfi District of Ghana, between April and June 1989. The results indicated that, although the presence of the perineal stain was conclusive proof of sexual maturity in an individual, it was not efficacious as an index for sexual maturity for biological work in these animals (p>0.05), because it excluded some that, although sexual mature, did not exhibit the trait, particularly young adults. However, the perineal stain may be useful as a management tool for identifying sexually mature captive greater cane rats. About 7 out of every 10 caught each month were found to be in breeding condition.     

A Combination Histochemical Stain for Equine Muscle

The purpose of this study was to find a combination histochemical staining technique for the evaluation of equine skeletal muscle that is reliable and effective, while offering a substantial reduction in the labor and cost involved with currently used individual histochemical methods. Several combinations under varying conditions of pH were studied. The most uniform results were obtained using an acid preincubation step at an optimal pH of 4.2 followed by reduced nicotinamide adenine dinucleotide-tetrazolium reductase (NADH-TR) and the remainder of the acid-ATPase procedure.     

Coloring plastinated specimens

In the early days of plastination, plastinate Color was the usual grey/brown familiar to formalin‐fixed biological specimens. Initially, trials with Kaiserling's, Klotz, Jore's and McCormick's fixative solutions were disappointing. Vascular injections with Colored epoxy were a great breakthrough in the 1980s. Biodur AC10^® stain was the first stain of note to be applied to gross specimens to be plastinated and was applied in the last acetone bath. As plastination became more popular, specimen Color became an important and necessary aspect. Reactivation of the normal Color of red blood cells within a formalin‐fixed specimen was introduced as a mechanism to restore Color to plastinated specimens. Painting of plastinated vessels was tried with some success, and finally, a superior new proprietary type of silicone coloration was developed. More recently, a versatile red pigment stain was developed. All of these have added aesthetically to the plastination processes and will certainly be a reality in the years to come. The various methodologies to Color plastinates are presented. Time will tell how effective these may or may not be.     

猪圆环病毒感染后部分免疫器官的组织化学检测

采用非特异性酯酶和甲基绿-派洛宁两种染色方法,对40头猪的淋巴结、脾脏和扁桃体进行研究,利用细胞计数软件,统计分析T、B淋巴细胞的数量变化。结果表明,圆环病毒可导致机体淋巴组织T细胞和B细胞减少,且淋巴细胞数量的变化受伴发病原的影响,其中猪瘟病毒影响最大,伪狂犬病病毒和猪繁殖与呼吸综合征病毒次之。     

诊断桑树黄化型萎缩病的新方法

本文探讨利用瑞氏染色法和旦尼氏染色法诊断桑树黄化型萎缩病的可能性。试验结果表明,用此方法,在病株枝条或主根的横切面上,韧皮部的病原寄生部位被染成兰色或青色,呈阳性反应,健株组织切片的韧皮部则不着色,呈阴性反应。可作为桑黄化型萎缩病病株的实验诊断手段。     

Comparison of four staining methods for detection of mast cells in equine bronchoalveolar lavage fluid

Mast cells normally are present in equine bronchoalveolar lavage fluid (BALF), but usually represent <2% of all cells in healthy horses. An increased percentage of mast cells has been associated with airway hyperactivity and inflammatory airway diseases, but marked differences are reported between studies in normal and diseased horses. Because an abnormal mast cell count may be of clinical relevance, we compared the ability of a fast Romanowsky method to stain mast cell granules with that of 3 metachromatic stains: automated Romanowsky, May-Grünwald Giemsa, and toluidine blue stains. The BALF cells from 24 horses were studied. A differential cell count was performed blindly on 400 cells. The percentages of mast cells obtained were analyzed by means of repeated-measures analysis of variance and Fischer's PLSD test. The Bland and Altman method was used to assess agreement among stains. The mean percentage of mast cells in BALF was significantly lower with the fast Romanowsky than with the automated Romanowsky, May-Grünwald Giemsa, and toluidine blue stains. With the fast Romanowsky stain, the metachromatic granules of mast cells were not stained, and their identification was based on morphologic criteria. Toluidine blue staining allowed detection of the highest mean percentage of mast cells, but was inadequate for performing a differential cell count on other cell types. In conclusion, fast Romanosky stain may be inadequate for detection of mast cells in equine BALF, whereas automated Romanowsky, May-Grünwald Giemsa, and toluidine blue stains provide metachromatic staining of mast cell granules.     

牛活体采卵体外受精不分裂MⅡ期卵母细胞的研究

牛活体采卵体外成熟后,常规进行体外受精,平均卵裂率为73.1%。在卵裂率稳定的前提下,随机挑选96枚没有卵裂的MⅡ期卵母细胞进行Hoechst33342染色分析,以期找出卵子没有分裂的原因,为进一步提高卵裂率提供科学资料。结果发现精子没有进入卵母细胞的占59.4%,精子进入卵母细胞但雌雄原核未融合的占19.8%,多精受精引起发育阻滞的占13.5%。结果表明,在保证卵母细胞成熟的前提下,引起牛体外受精失败的主要原因是精子没有进入卵母细胞。