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  • Symmetric Synapse - Clathrin Coated Endocytosis Pit in the Postsynaptic Dendrite

    Application Note for Leica EM ICE - WT hippocampal neurons were plated at a density of 80,000 cells/cm2 on 6 mm sapphire disks for 14 days. Sample were frozen using a high-pressure freezer (Leica EM ICE) under a pressure of 2100bar by mounting it into a sandwich support with extracellular solution containing 15% of Ficoll 400, to assess ice crystal damage. The Cryo-fixation was achieved within milliseconds allowing simultaneous immobilization of all macromolecular components. After freezing, sam­ple was transferred into cryovials containing 1% glutaraldehyde, 1% osmium tetroxide, 1% milliQwater in anhydrous acetone and processed in an automated freeze-substitution device (Leica EM AFS2).
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