U.S. Natural Gas Production Will Increase In 2017. A general view of the Liquefied Natural Gas (LNG) importation terminal on the Isle of Grain. After the first fall in U.S. dry gas production in more than a decade in 2016, output is sure to regain its upward trend in 2017.
Retroviridae is a family of enveloped viruses that replicate in a host cell through the process of reverse transcription. A retrovirus is a single-stranded positive-sense RNA virus with a DNA intermediate and, as an obligate parasite, targets a host cell.
A provirus not only refers to a retrovirus but is also used to describe other viruses that can integrate into the host chromosomes, another example being adeno-associated virus. Not only eukaryotic viruses integrate into the genomes of their hosts; many bacterial and archaeal viruses also employ this strategy of propagation.