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文献和实验Electron Microscopes:The Electron Microscope in Biology
kV) electron has a wavelength ( ) of 0.0055nm. The numerical aperture, however, of the electromagnetic lenses is extremely narrow ( = 1 degree). Even so, if these values are entered into the resolution formula then the resolution is 0.27nm
Development of techniques for primary culture of C. elegans embryonic neurons
communication) has developed a technique for removing the eggshells of embryos as young as the 1-cell stage by a combination of enzymatic digestion and pipetting through a narrow aperture. These embryos, which remain surrounded by a membrane
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