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. Author manuscript; available in PMC: 2008 Nov 1.
Published in final edited form as: J Struct Biol. 2007 Aug 24;160(2):200–210. doi: 10.1016/j.jsb.2007.08.009

Figure 2.

Figure 2

Recognizable reconstructions can be produced by combining a surprisingly small number of individual sub-tomograms. Left-to-right: randomly chosen subsets of the data (consisting of 20, 40, 80 or 100 sub-tomograms) were summed and five-fold averaged. Densities for receptors and membrane are visible after averaging as few as 20 particles. Fourier shell correlation (vs. the ~1500-particle reconstruction) indicates resolutions of 5.0, 4.7, 4.4. and 4.2 nm for these four maps respectively.