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Imaging and etching: soft x-ray microscopy on whole wet cells

机译:成像和蚀刻:整个湿细胞上的软X射线显微镜

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Abstract: We have produced images of whole wet tissue culture cells with the Stony Brook/BNL scanning transmission x-ray microscope (STXM). For fixed cells we have taken images at theoretical resolutions of approximately 50 - 75 nm, and in practice have measured FWHM of features down to near 100 nm, without any exotic image processing. For un-fixed (i.e., initially live) cells we have imaged with 100 nm pixels and measured features down to 250 nm. In order to do this we have developed, tested, and used a wet cell for maintaining fixed or live cells on the STXM stage during imaging. Our design of the wet cell and the culture substrates that go with it make the STXM compatible with almost all standard systems for surface adherent tissue culture. We show some new images of whole wet fixed and unfixed cells, with visible sub-micron features. We also report data that helps to characterize the tissue damage due to x-ray absorption during STXM imaging. !7
机译:摘要:我们已经使用Stony Brook / BNL扫描透射X射线显微镜(STXM)制作了整个湿组织培养细胞的图像。对于固定单元,我们已经以大约50-75 nm的理论分辨率拍摄了图像,并且在实践中已经测量了低至100 nm左右的特征的FWHM,而没有进行任何奇异的图像处理。对于未固定的(即最初处于活动状态的)细胞,我们以100 nm像素进行了成像,并测量了低至250 nm的特征。为了做到这一点,我们开发,测试并使用了湿细胞,以在成像过程中将固定细胞或活细胞维持在STXM载物台上。我们对湿细胞和随之而来的培养基质的设计使STXM与几乎所有用于表面粘附组织培养的标准系统兼容。我们展示了整个湿的固定和未固定细胞的一些新图像,具有可见的亚微米特征。我们还报告了有助于表征STXM成像过程中由于X射线吸收而引起的组织损伤的数据。 !7

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