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Reflection About the Ancient Emergence of HTLV-2 Infection
Jorge Casseb1, Luciano Rodrigo Lopes2
1Laboratory of Dermatology and Immunodeficiencies, Department of Dermatology, University of São Paulo Medical School, Brazil/Institute of Tropical Medicine of São Paulo, São Paulo, Brazil.
Abstract:
During millions of years, viruses have emerged and reemerged, with imbalance of photogenicity and transmissivity overtime. This letter describes that sometimes the nomenclature is uncertain what may actually happen during retrovirus evolution nowadays. This article discusses a possibility that human T-lymphotropic virus type 2 (HTLV-2) has been processed to incorporate the human genome in the last millions of years. Persistent viruses such as human immunodeficiency virus type 1 (HIV-1), HIV-2, and human T cell lymphotropic type 2 may also have potential of endogenization instead of a cytolytic process in a long time.
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