苏木精—伊红染色法中几种染色液的比较试验

苏木精—伊红染色法(H.E.染色法)应用于各种组织的染色,是组织学及病理检查最常用的基本方法。苏木精和伊红染色液的配方繁多,但详解染色时间没有文献报告。为了大量制作切片,掌握各种染色液的染色效     

加速苏木精染色液“成熟”的比较试验

目前,在组织细胞学制片中,苏木精染色液仍作为优良的常规核染色剂。苏木精本身没有染色能力,经过氧化后苏木精(C_(16)H_(14)O_6)失去两个氢原子而变为能产生具有染色能力的苏木红(C_(16)H_(12)O_6)。氧化过程:     

不同脱钙液对兔膝关节组织切片染色的影响

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。     

公牛冻精品质检测方法比较

<正> 1.材料与方法①精液样本:中国荷斯坦牛颗粒冻精(山西省种牛站)。②染色原理:利用活精子对特定染料不着色而死精子着色的特点来区分死精子和活精子,从而得出存活率指标。通过油镜检精查子的形态和顶体,统计出畸形率和顶体完整率指标。③染色试剂:刚果红、苯胺兰、伊红、美兰、10%葡萄糖、柠檬酸钠、姬姆萨染液(姬姆萨原液:磷酸缓冲液:蒸馏水=2:3:5)、甲醇。④制片方法:先将冻精用2.9%的柠檬酸钠解冻,并置于37℃温度下,孵育2小时染片。方法1(常规染色法):(1)存活率:采用伊红法,取精液和5%伊红溶液各一滴,置于清洁载玻片一端,迅速混合均匀,制成抹片,在400～600倍显微镜下观察。     

苏木素染液配方的改进及使用效果的观察

苏木素-伊红(H.E.)染色一直作为病理组织学诊断的常规染色法.多年来,我们一直使用Harris苏木素染液虽然具有良好的细胞核着色力,但易产生沉淀凝胶和表面氧化金属膜而影响染色效果和使用期限.我们从1995年就针对Harris液存在的问题调整了氧化剂和媒染剂的用量,增加了稳定剂和促染剂.改进后的苏木素染液(简称本液)经使用比较,效果良好.     

家畜精细胞结构的快速染色法

检查精细胞的详细结构和评价精液潜在的繁殖力,需对精子进行染色。精子染色方法虽已有许多报道,但这些方法耗时长,而且,山羊、绵羊、猪和牛等家畜精子顶体很小,因此呈现的细胞结构很不理想。本文借鉴实验动物的精子染色方法,研究家畜的精细胞结构。从附睾尾(山羊、绵羊、猪)或通过采精(公牛)取得精液,置于生理盐水中。用盐水将其稀释至1—2×10~6精子/ml。取一滴稀释精液于干燥、洁净载玻片上,用另一载玻片边缘将其抹成薄的涂片。将涂片置于48～50℃加热板上干燥1～2分钟,然后放入乙醚酒精液(1:1),在室温下(25℃)固定3分钟。再将染液(由5%苯胺蓝、水、25%伊红 Y 和0.1%苯酚组成,调     

不同解冻液对精子呼吸强度的影响

呼吸是精子重要的生命现象之一。当精液中有氧存在时精子就通过呼吸,氧化代谢精液中可以利用的营养物质。本试验测定了4种不同解冻液所解冻公牛冻精中精子的耗氧量,结果表明,不同解冻液对精子的呼吸强度有显著影响。一、材料与方法 (一)解冻液的组成见《中国奶牛》,1991年,第4期。 (二)精液山西省家畜精液冷冻中心HB63号公牛颗粒冻精。     

多浪羊细管冷冻精液制作技术的研究

为保存和利用优秀地方品种多浪羊的遗传资源,试验在多浪羊原产地进行了细管冻精制作试验.用采集的多浪羊种公羊精液,比较5种冻精保存液配方的细管冻精冷冻效果,测定解冻后精子活力.结果表明:4.83%乳糖保存液解冻后精液的活率平均为36% ,优于其它4种保存液,且差异极显著(P<0.01),解冻后精子的畸形率也均低于其它4种稀释液,差异极显著(P<0.01).表明4.83%的乳糖保存液配方是理想的绵羊细管冻精稀释液.     

苏木精染色液中应用5种氧化剂的比较试验

在组织细胞学制片中，苏木精染色液仍作为优良的常规核染色剂。苏木精本身没有染色能力，经过氧化后苏木精（C16H14O6）失去2个氢原子而变为能产生具有染色能力的苏木红（C16H12O6）。     

意大利蜜蜂蜂王卵巢组织观察方法的探究

采用石蜡切片技术配合以光学显微镜观察,通过设置不同试验条件对适合意大利蜜蜂蜂王卵巢组织的石蜡切片制作及染色方法进行了探究。结果显示:用甲醛固定液常温固定8 h、水浸洗30 min的卵巢组织在58℃恒温箱条件下浸蜡,苏木精和伊红处理时间均为8 min时的切片效果最好,说明卵巢组织对固定剂以及浸蜡时的温度和染色时间是有选择的,只有在最佳的试验条件下制得的石蜡切片才能避免组织破碎,保证其染色效果良好从而更好的观察其组织结构。     

Adenovirus inclusions in the ileum in coccidiosis in suckling piglets

Numerous intranuclear inclusion bodies in enterocytes were detected exclusively in the ileum of two nine-day piglets coming from a litter infected with diarrhea. The inclusion bodies were homogeneous in hematoxylin and eosine (HE), their staining was not clear enough, was amphophilic and they filled nearly the whole nucleus. They were eosinophil less often and had a halo on the periphery. Their staining was clearly orange-red in Feulgen's nuclear reaction after re-staining with G orange and bright green. Intranuclear inclusions were located exclusively on shortened villi and pseudovilli of ileum above the follicles of activated Peyer's patches. The findings of intranuclear inclusions in ileum demonstrate adenovirus enteral infections in suckling piglets.     

Quantitative characterization of yeast cell incorporation in phagocytes: microscopic methods for differentiation between adherent and ingested particles

A light- and a fluorescence-microscopic method for quantitative assessment of yeast cell incorporation in phagocytes were developed. The light-microscopic method offers methylene blue prestained yeast cells as phagocytosis particles and counterstains nonincorporated yeasts with eosine. The fluorescence-microscopic method works by acridine orange staining of phagocytosis assays. Fluorescence of nonincorporated yeast cells is suppressed by addition of methylene blue. Different ways of evaluating the results of microscopic quantitation of phagocytosis are discussed.     

鹅副粘病毒对鸡胚及雏鸡致病性的初步研究

鹅副粘病毒是一种引起多种家禽疾病的病毒,通过人工感染鸡胚和雏鸡试验,其结果表明本病毒主要以呼吸系统、消化系统病变为主要临床症状和特征,并且可导致10日龄的鸡胚100％死亡,对雏鸡的致死率为85％。因此,可见其致死率高,广大养殖户应重视鹅副粘病毒的预防。     

热带假丝酵母固体发酵代谢物提取方法的比较分析

本试验比较了几种提取微生物固体发酵代谢物的方法,旨在筛选出一种尽可能多保留了代谢物的方法.试验采用热带假丝酵母固体发酵棉粕源底物,以液相色谱串联质谱( LC-MS)为分析平台,分别采用50％冷甲醇溶液(甲醇法)、酸性甲醇-乙腈溶液(酸性甲醇-乙腈法)和50％乙腈溶液(乙腈法)提取发酵代谢物.结果表明:采用酸性甲醇-乙腈法、乙腈法和甲醇法分别提取出1 831、1 522和1 262种代谢物,提取效率表现为酸性甲醇-乙腈法＞甲醇法＞乙腈法.本试验中3种方法相比,酸性甲醇-乙腈法提取的代谢物种类最多,提取效率最佳,是微生物固体发酵代谢物提取的有效方法.     

几种农药对桑椹小粒性菌核病的防治效果试验

桑椹菌核病是果用桑树的重要病害,为高效、安全控制该病对桑果生产的危害,进行了大田农药防治筛选试验。结果表明,70%甲基托布津可湿性粉剂500倍液、50%多菌灵-硫磺粉剂500倍液和1 000倍液对桑椹小粒性菌核病具有较好的防治效果,且对桑叶和桑椹无明显药害;70%甲基托布津粉剂1 000倍液、25%吡唑醚菌酯乳油1 500倍和3 000倍液以及40%嘧霉胺粉剂1 000倍液也有一定的防治效果。     

Comparison of histological lesions and immunohistochemical staining of proteinase-resistant prion protein in a naturally occurring spongiform encephalopathy of free-ranging mule deer (Odocoileus hemionus) with those of chronic wasting disease of captive mule deer

In this investigation, the nature and distribution of histologic lesions and immunohistochemical staining (IHC) of a proteinase-resistant prion protein were compared in free-ranging mule deer (Odocoileus hemionus) dying of a naturally occurring spongiform encephalopathy (SE) and captive mule deer dying of chronic wasting disease (CWD). Sixteen free-ranging deer with SE, 12 free-ranging deer without SE, and 10 captive deer with CWD were examined at necropsy. Tissue sections were stained with hematoxylin and eosin, and duplicate sections were stained with a monoclonal antibody (F89/160.1.5). Histological lesions in the free-ranging deer with SE and captive deer with CWD were found throughout the brain and spinal cord but were especially prominent in the myelencephalon, diencephalon, and rhinencephalon. The lesions were characterized by spongiform degeneration of gray matter neuropil, intracytoplasmic vacuolation and degeneration of neurons, and astrocytosis. IHC was found throughout the brain and retina of deer with SE and CWD. Positive IHC was found in lymphoid tissue of deer with SE and CWD. Histologic lesions and IHC were not found in multiple sections of integument, digestive, respiratory, cardiovascular, endocrine, musculoskeletal, and urogenital systems of deer with SE or CWD. Comparison of histologic lesions and IHC in tissues of free-ranging deer with those of captive deer provides strong evidence that these two diseases are indistinguishable morphologically.     

Canine pythiosis--isolation and identification of Pythium insidiosum

Pythium insidiosum was isolated from the subcutaneous tissue of a 1-year-old tan crossbreed dog and from the intestinal tract of an 18-month-old Samoyed male. Gomori's methenamine silver stain was superior to hematoxylin and eosin in demonstrating the organism in tissue sections. The agent was identified as P. insidiosum by zoospore formation in an aqueous yeast extract solution containing grass blades. Exoantigens produced in culture were shown to be identical to known P. insidiosum antigens by microimmunodiffusion.     

Pathologic changes associated with experimental lasalocid and monensin toxicosis in cattle

The acute toxicity of lasalocid and monensin was studied in 36 Holstein steers. The cattle were given (orally) a single dosage of lasalocid (1, 10, 50, or 100 mg/kg of body weight) or monensin (25 mg/kg of body weight) or rice hulls. Animals were observed once a day until they died or were euthanatized at 32 days after the dose was given. All cattle were necropsied. Heart, kidney, adrenal gland, liver, spleen, pancreas, lungs, brain, sciatic nerve, skeletal muscle, small intestine, large intestine, and rumen tissue sections, stained with hematoxylin and eosin, were studied microscopically. Lasalocid was lethal at dosages of 50 and 100 mg/kg, and monensin was lethal at the dosage given (25 mg/kg). Cattle dying of lasalocid and monensin toxicoses had gross and microscopic lesions consistent with cardiomyopathy. Dilated heart or petechial and ecchymotic hemorrhages were observed with both drugs. Microscopically, multifocal areas of myocyte necrosis were observed. Those cattle that died within 3 days of dosing with either drug had a marked degranulation of pancreatic acinar cells. Changes were not observed in any other tissues.     

Estructura del estroma conjuntivo del epidídimo del bovino cebú (Bos indicus)

Six adult Zébu cattle were used for a study of the histologic structure of the epididymus. Tissues were fixed in neutral formalin or in Bouin's solution. Tissues were prepared with parafin sectioning and stained with hematoxylin and eosin, Masson and Mallory's trichrome stain and with aldehyde fuchsin and Gomori's argentamine stains. The structure of the connective tissue stroma is described and compared with that of other mammals. The presence of smooth muscle within the stroma and within the tunica albuginea is described for the Zébu.     

Effects of corticosteroid treatment on survival time in dogs with chronic hepatitis: 151 cases (1977-1985)

Medical records of 151 dogs with chronic hepatitis were reviewed. Corticosteroid treatment had a statistically significant (P less than 0.005) effect on improving survival time when corticosteroid-treated dogs were compared with untreated dogs. Dogs dying within 1 week of examination represented 37.1% of the cases, and when compared with those living more than 1 week, serum glucose concentration was significantly lower (P less than 0.001); prothrombin time and partial thromboplastin time were significantly longer (P less than 0.001); blood ammonia concentration after oral administration of ammonium chloride was significantly higher (P less than 0.05); and necrosis severity and fibrosis severity were significantly greater (P less than 0.05 and P less than 0.022, respectively). The best predictors of early death were low normal serum glucose concentration (P less than 0.001) and prolonged prothrombin time (P less than 0.030), which was abnormal in 60.0% of dogs dying early. Partial thromboplastin time, which was increased in 92.0% of dogs dying early and in 42.6% of dogs living more than 1 week, was a less reliable predictor. Plasma ammonia concentration after oral administration of NH4Cl was least reliable in predicting early death. In dogs living more than 1 week, hypoalbuminemia was a predictor of shorter survival time (P less than 0.003). Of all the histologic features evaluated, only necrosis severity and fibrosis severity were accurate predictors of early death. The presence of bridging fibrosis was a predictor of shorter survival time in dogs living more than 1 week (P less than 0.0002).