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A retrovirus is a type of virus that inserts a DNA copy of its RNA genome into the DNA of a host cell that it invades, thus changing the genome of that cell. [2] After invading a host cell's cytoplasm, the virus uses its own reverse transcriptase enzyme to produce DNA from its RNA genome, the reverse of the usual pattern, thus retro (backward).
The walleye epidermal hyperplasia viruses are two species of retroviruses classified under Epsilonretrovirus, a genus in the family of Retroviridae. [1] There are three genome sequenced and identified exogenous retroviruses of this genus which include two known types ( WEHV-1 and WEHV-2 ) associated with walleye epidermal hyperplasia disease.
Rarely, retroviral integration may occur in a germline cell that goes on to develop into a viable organism. This organism will carry the inserted retroviral genome as an integral part of its own genome—an "endogenous" retrovirus (ERV) that may be inherited by its offspring as a novel allele. Many ERVs have persisted in the genome of their ...
Hyperplasia of the breast – "Hyperplastic" lesions of the breast include usual ductal hyperplasia, a focal expansion of the number of cells in a terminal breast duct, and atypical ductal hyperplasia, in which a more abnormal pattern of growth is seen, and which is associated with an increased risk of developing breast cancer.
The human endogenous retrovirus K (HERV-K) was inherited million years ago by the genome of the human ancestors. [18] In 1999 Barbulescu, et al. showed that, of ten HERV-K proviruses cloned, eight were unique to humans, while one was shared with chimpanzees and bonobos, and one with chimpanzees, bonobos and gorillas. [19]
Human T-cell lymphotropic virus type 1 or human T-lymphotropic virus (HTLV-I), also called the adult T-cell lymphoma virus type 1, is a retrovirus of the human T-lymphotropic virus (HTLV) family. Most people with HTLV-1 infection do not appear to develop health conditions that can be directly linked to the infection.
Walleye epidermal hyperplasia virus 2; Epsilonretrovirus is a waterborn genus of the Retroviridae family. [2] It infects fish. The species include Walleye dermal ...
Human betaretrovirus (HBRV), also known as Human mammary tumor virus, or Mouse mammary tumor-like virus is the human homologue of the Mouse mammary tumor virus (MMTV). The nomenclature for Human betaretrovirus was introduced following characterization of infection in patient with autoimmune liver disease suggesting the virus is not solely found in mice nor exclusively implicated in the ...