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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Nat Immunol. 2014 May;15(5):415–422. doi: 10.1038/ni.2872

Figure 1. Types of Endogenous Retroelements in the Mammalian Genome.

Figure 1

Autonomous retroelements encode all the proteins necessary for replication. These include LTR type endogenous retroviruses and LINE elements. Nonautonomous retroelements include SINEs, and require LINEs for their mobility. (LTR, Long terminal repeat; GAG, group-specific antigen; PRT, protease; Pol, polymerase; ENV, envelope)