FRANCIS LEROY, BIOCOSMOS / SCIENCE PHOTO LIBRARY FRANCIS LEROY, BIOCOSMOS / SCIENCE PHOTO LIBRARY
Retrovirus budding from a cell. Computer artwork showing a retrovirus assembling in, and budding from, a host cell. The viral RNA (ribonucleic acid, red) and reverse transcriptase enzyme (yellow) are packaged in a nucleocapsid (white). This buds from the cell through the cell membrane, which contains viral envelope proteins (green).
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