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. Author manuscript; available in PMC: 2016 Nov 4.
Published in final edited form as: J Am Soc Mass Spectrom. 2016 Mar 28;27(6):1028–1036. doi: 10.1007/s13361-016-1362-8

Figure 2.

Figure 2

Transmission electron micrographs of P22 procapsids (PCs). Formaldehyde cross linking was done post-assembly. Scale bars are 100 nm. (a) PCs made from A285T substitution. White arrows point to representative, ~60 nm diameter, T = 7 particles. The bottom one appears to contain scaffolding, whereas the top one seems to be mostly empty. (b) PCs made from A285Y substitution