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Examples of EM support films. A) Holey carbon, such as Quantifoil® R2/2 (2 μm holes separated by 2 μm), Scale bar 1 μm. B) Lacy carbon film (irregular network of thin carbon), Scale bar 1 μm. C) Finder grid (here with Quantifoil® R2/2 carbon), scale bar 10 μm.
