Search results
Results from the WOW.Com Content Network
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).
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 ...
Each HERV family is derived from a single infection of the human germline by an external retrovirus. After integrating into the human DNA, these retroviruses expanded and evolved over time. [4] A complete HERV includes specific genes – gag, pro, pol and env – flanked on either side by the long terminal repeats, which act like bookends.
XMRV is a recombinant virus observed incidentally as a result of recombination between two endogenous mouse retroviruses by prostate cancer researchers in the mid-1990s. Although it can infect human tissue, no known disease is associated with the infection [10] [11] [12] and it is unlikely to exist outside laboratories. [13]
Transformation infections is limited to abortive or restrictive infections. [1] This constitutes the broadest category of infections as it can include both cytocidal and persistent infection. Viral transformation is most commonly understood as transforming infections, so the remainder of the article focuses on detailing transforming infections.
The World Health Organization has drawn up the first-ever list of fungal pathogens posing the greatest threat to human health, warning that some strains are increasingly drug-resistant and ...
First diagnosis of aHUS is often made in the context of an initial, complement-triggering infection, and Shiga-toxin has also been implicated as a trigger that identifies patients with aHUS. Treatment involves supportive care and may include dialysis , steroids , blood transfusions , and plasmapheresis .
Experts offer a list of the fish that have the most health benefits — from salmon and sardines to tilapia and tuna — plus which fish to avoid and why. These fish are the best and worst for ...