MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
Herpes virus particles, computer artwork. Each particle (virion) consists of a deoxyribonucleic acid (DNA) genome (purple, barely seen) surrounded by an icosahedral capsid (green), which is itself surrounded by an envelope covered in glycoprotein spikes (blue). Members of the herpes virus family include several that infect humans: herpes simplex viruses type 1 and type 2 (oral and genital herpes), varicella-zoster virus (chicken pox and shingles), Epstein-Barr virus (glandular fever) and cytomegalovirus (various infections).
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