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荧光寿命成像与荧光共振能量转移
荧光寿命是荧光团在发射荧光光子返回基态之前保持其激发态的平均时间长度。这取决于荧光团的分子组成和纳米环境。
FLIM将寿命测量与成像相结合:对每个图像像素以测得的荧光寿命进行颜色编码,产生额外的图像反差。因此,FLIM可以提供关于荧光分子空间分布的信息和有关其生化状态或纳米环境的信息。…
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FRAP实验步骤式指南
漂白后荧光恢复(FRAP)已被认定为观察大分子平移扩散过程方面使用最为广泛的一种方法。由此产生的信息可用于确定动力学性质,如扩散系数、流动分数和荧光标记分子的传输速率。FRAP实验利用了短激光脉冲的荧光团辐照。先进的激光扫描显微镜如TCS…
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Fluorescence Correlation Spectroscopy (FCS)
Fluorescence correlation spectroscopy (FCS) measures fluctuations of fluorescence intensity in a sub-femtolitre volume to detect such parameters as the diffusion time, number of molecules or dark…
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Fluorescence Recovery after Photobleaching (FRAP) and its Offspring
FRAP (Fluorescence recovery after photobleaching) can be used to study cellular protein dynamics: For visualization the protein of interest is fused to a fluorescent protein or a fluorescent dye. A…
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Förster Resonance Energy Transfer (FRET)
The Förster Resonance Energy Transfer (FRET) phenomenon offers techniques that allow studies of interactions in dimensions below the optical resolution limit. FRET describes the transfer of the energy…