FIGURE 1. Cryo-EM image and three-dimensional map of bacteriophage 
15.
From the following article:
Backbone structure of the infectious 
15 virus capsid revealed by electron cryomicroscopy
Wen Jiang, Matthew L. Baker, Joanita Jakana, Peter R. Weigele, Jonathan King & Wah Chiu
Nature 451, 1130-1134(28 February 2008)
doi:10.1038/nature06665
a, Typical 300-kV image of ice-embedded 15 kept at 4.2 K, recorded in a JEM3000SFF electron cryomicroscope. Fingerprint signature features of viral DNA are clearly seen in the projection images. b, The 4.5-Å resolution three-dimensional reconstruction of 15 phage, about 700 Å in diameter, radially coloured. c, The seven subunits in an asymmetric unit, annotated in different colours. Each subunit contains one copy of gp7 and one copy of gp10.
