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.
Not all RNA viruses are retroviruses, e.g., the measles virus and flu virus are RNA viruses, but not retroviruses. There are three families of retroviruses: oncoviruses (causing cancer), lentiviruses (slow viruses, of which HIV is one), and foamy viruses or spumaviruses (about which much less is known).