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. 2021 Jun 30;8:709395. doi: 10.3389/fmolb.2021.709395

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Copyright © 2021 El-Tanbouly, Hassan and El-Messeiry.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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A schematic drawing illustrating the structure of retrovirus. The virus is surrounded by a lipid bilayer membrane. The membrane contains the transmembrane (TM) region and receptor binding glycoprotein (SU). The viral matrix protein (MA) covers the internal side of the viral membrane, while the capsid protein (CA) covers the viral core. The viral core is composed of the viral RNA in addition to the nucleocapsid (NC) protein. The viral core also contains viral replicating enzymes integrase (IN), and reverse transcriptase (RT). This figure is created by BioRender software.