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. Author manuscript; available in PMC: 2021 Sep 4.
Published in final edited form as: J Cell Sci. 2021 Mar 4;134(5):jcs252676. doi: 10.1242/jcs.252676

Figure 2. Virus classification.

Figure 2

A Main RNA and DNA viral families causing human diseases. Enveloped and non-enveloped classification is shown. Enveloped viruses are those in which at least one type of infectious form of the virion is enveloped by a lipid membrane, which can be acquired from a variety of cellular origins. Blue and black indicates nuclear and cytoplasmic replication, respectively. B Sites of replication and envelopment / budding for the viral families that replicate in the cytoplasm. In Reoviridae, association with ER membranes of viral factories has been reported. Red asterisks indicate that these families are classified as non-enveloped, although a non-lytic egress has been described (see text for details).