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 microbe is a microscopic organism. The presence and multiplication of an organism on or within a host is called colonization or infection. We refer to the colonization of one organism by another as symbiosis. If the symbiotic relationship benefits both organisms, it is called mutualism.