High magnification of 150,000X, negatively-stained transmission electron micrograph (TEM) revealing some of the ultrastructure morphology exhibited by a number of different microorganisms. Panel "A" represents a composite micrograph, for comparing the size difference between a poxvirus at the top, a bacillus in the middle and a herpesvirus at the bottom. Panels "B", "C" and "D" are TEMs depicting the sequential degeneration of variola virus patricles.


High magnification of 150,000X, negatively-stained transmission electron micrograph (TEM) revealing some of the ultrastructure morphology exhibited by a number of different microorganisms. Panel "A" represents a composite micrograph, for comparing the size difference between a poxvirus at the top, a bacillus in the middle and a herpesvirus at the bottom. Panels "B", "C" and "D" are TEMs depicting the sequential degeneration of variola virus patricles.


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Photo credit: © World History Archive / Alamy / Afripics
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