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Cover glasses, high performance, D=0.17mm

Company: ZEISS
Catalog#: 474030-9000-000
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Optical Clearing and Index Matching of Tissue Samples for High-resolution Fluorescence Imaging Using SeeDB2
Author:
Date:
2018-10-20
[Abstract]  Tissue clearing techniques are useful for large-scale three-dimensional fluorescence imaging of thick tissues. However, high-resolution imaging deep inside tissues has been challenging, as it is extremely sensitive to light scattering and spherical aberrations. Here, we present a water-based optical clearing and mounting media, SeeDB2, which is designed for high numerical aperture (NA) objective lenses with oil or glycerol immersion. Using quick and simple soaking procedures, the refractive indices of samples can be matched either to that of immersion oil (1.52) or glycerol (1.46), thus minimizing light scattering and spherical aberrations. Fine morphology and various fluorescent proteins are highly preserved during the clearing and imaging process. Our method is useful for the ... [摘要]  组织清除技术可用于厚组织的大规模三维荧光成像。然而,高分辨率成像深层组织一直是一个挑战,因为它对光散射和球面像差极为敏感。在这里,我们提出了一种水基光学清除和安装介质SeeDB2,它是专为高数值孔径(NA)物镜和油或甘油浸泡而设计的。使用快速简单的浸泡程序,样品的折射率可以与浸油(1.52)或甘油(1.46)相匹配,从而最大限度地减少光散射和球面像差。在清理和成像过程中,高度保留了良好的形态和各种荧光蛋白。我们的方法可用于使用共聚焦和超分辨率显微镜在突触分辨率下的神经元电路的三维荧光成像。 SeeDB2也可用作荧光蛋白超分辨率成像的封固介质。
【背景】生物组织以3D组织。此外,许多重要的细胞机器,例如,例如,神经元中的突触,是亚微米级的。因此,对用于亚微米级3D成像的方法的需求不断增加。串联电子显微镜技术(例如>,FIB-SEM或SBF-SEM)很有前景,但它们无法充分利用现代生命科学中可用的基因荧光标记工具。为了利用荧光显微镜促进3D成像,近年来已经开发了许多组织清除技术(Richardson和Lichtman,2015和2017)。它们专为大规模3D成像而设计,其中一些可用于全脑,甚至是固定样品的全身尺度荧光成像,结合共焦,双光子或光片显微镜。然而,其中许多尚未针对高分辨率成像进行全面优化。
在荧光显微镜中,横向分辨率( d >)给出如下:
d ...

Immunofluorescence Analysis of Human Endocervical Tissue Explants Infected with Neisseria gonorrhoeae
Author:
Date:
2018-02-05
[Abstract]  Colonization and penetration of the epithelium is the infection-initiating route of mucosal pathogens. The epithelium counteracts infection by eliciting host cell responses while maintaining the mucosal barrier function. The obligate human sexually transmitted bacterium Neisseria gonorrhoeae, or gonococcus (GC) infects the female reproductive tract primarily from the endocervical epithelium. Due to lack of an infection model that mimics all aspects of human infections in the female reproductive tract, GC pathogenesis is poorly understood. This protocol takes advantage of the viability and functional integrity of human cervical tissues propagated in culture to generate an ex vivo infection model. This tissue model maintains the nature of the infection target and ... [摘要]  上皮的定植和穿透是粘膜病原体的感染启动途径。 上皮细胞通过引发宿主细胞应答来抵抗感染,同时维持粘膜屏障功能。 专性人类性传播细菌淋病奈瑟氏球菌或淋球菌属(GC)主要从宫颈内膜上皮感染女性生殖道。 由于缺乏模仿女性生殖道人类感染的各个方面的感染模型,GC发病机制知之甚少。 该方案利用培养物中繁殖的人宫颈组织的生存力和功能完整性来产生体外感染模型。 这种组织模型保持了感染目标和环境的性质,而没有任何操作,如病毒永生化上皮细胞。 使用免疫荧光显微镜,分析GC与子宫颈上皮细胞的相互作用。


【背景】淋病奈瑟菌(GC)感染人类生殖器上皮,引起淋病,一种常见的性传播感染。女性感染可导致严重的并发症,如盆腔炎,引起输卵管瘢痕和堵塞,易发生异位妊娠或不孕。由于抗生素耐药菌株的流行率增加,淋病又成为重要的公共卫生问题。由于人类是GC的唯一宿主,因此缺乏模仿人类感染各个方面的感染模型是推进我们对GC发病机理的理解的主要障碍。我们建立了人宫颈组织外植体模型和免疫荧光显微镜分析来检测GC感染妇女GC感染的主要部位人间宫颈细胞的机制。这种体外模型保持了宫颈上皮细胞的正常细胞构筑和组织完整性。使用这种模型和免疫荧光分析,我们表明,气相色氨酸定居和渗透到子宫颈组织,在那里他们可能导致症状和播散性淋球菌感染。 ...

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