KATERYNA KON / SCIENCE PHOTO LIBRARY KATERYNA KON / SCIENCE PHOTO LIBRARY
Transfusion transmitted virus (TTV) particles, computer illustration. This is a non-enveloped DNA (deoxyribonucleic acid) virus first identified in Japan in 1997. It has since been found to be near ubiquitous, causing chronic human infections, but is not associated with any disease.
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