DR. JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR. JEREMY BURGESS / SCIENCE PHOTO LIBRARY
Transmission electron micrograph of a section through a nucleus of a tobacco protoplast infected with a spherical virus called the Pea Enation Mosaic Virus (PEMV). The virus appearing as small circles tend to associate into tubular complexes. Nucleus has outgrowth. Mag: X 45,000.
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