Android is software for mobile phones, tablets and a growing range of devices encompassing everything from wearable computing to in-car entertainment. It launched in 2003 and is the worldâs most popular mobile operating system (OS).
Gut flora (gut microbiota, or gastrointestinal microbiota) is the complex community of microorganisms that live in the digestive tracts of humans and other animals, including insects. The gut metagenome is the aggregate of all the genomes of gut microbiota. The gut is one niche that human microbiota inhabit.
A member of the genus Bacillus, B. subtilis is rod-shaped, and can form a tough, protective endospore, allowing it to tolerate extreme environmental conditions.B. subtilis has historically been classified as an obligate aerobe, though evidence exists that it is a facultative aerobe.his species is commonly found in the upper layers of the soil, and evidence exists that B. subtilis is a normal gut commensal in humans. A 2009 study compared the density of spores found in soil (about 10 6 spores per gram) to that found in human feces (about 10 4 spores per gram).