The determination of 3-dimentional arrangement of cellular structures has become a necessary requirement in cellular biology. Unfortunately, the size of such structures usually lies beyond the diffraction limit and therefore they cannot be visualized in studies using today's widely popular fluorescence microscopy techniques. Photoactivation localization microscopy (PALM) and stochastic optical reconstruction microscopy (STORM) enables us to locate fluorescent molecules with nanometric

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... . We used these microscopy methods together with MicAO 3D-SRthe first adaptive optics device which introduces the three dimensional imaging capability for PALM/STORM. It also corrects various types of aberrations, induced by optical elements inside the microscope and by the biological sample. This correction almost doubles the number of detected photons and increases the localization precision by 40%. At 1000 detected photons the localization precision of our setup is 8 nm in lateral and 16 nm in axial directions. The separate optimization performed for two different colors delivers the superb imaging quality. We demonstrate this by imaging two centrosomal proteins in HeLa cells.