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> The population of bacteria living on frog skin protects the skin:-http://www.sciencedaily.com/releases/2015/10/151007144842.htm-"However, naturally occurring skin bacteria can respond to infection and adjust structure and function to compensate for it, according to the team.-"&apos;It turned out that in this experiment, it wasn&apos;t about a single bacterium being protective, but rather the structure of the whole community was important in infection and frog health," said Jeni Walke, a postdoctoral associate in Biological Sciences at Virginia Tech-***-"For this latest experiment, Belden&apos;s team collected bullfrogs from a pond in Giles County, Virginia. About half of the frogs were already infected with the fungus that can cause disease in some amphibian species.-"The team divided them into six experimental groups to explore the infection rate differences between those treated with antibiotics, which reduced the normal bacteria, those treated with an anti-chytrid probiotic bacterium and those not treated at all. These treatments resulted in differences in microbial structure on the frogs&apos; skin, which in turn influenced infection levels and frog growth.-"Because some frogs were infected with the fungus and others weren&apos;t, the scientists were also able to demonstrate that the fungus affects the microbial structure of the bacteria living on frog skin.-"In this experiment, it wasn&apos;t a single probiotic bacterium that was protective, but rather the structure of the whole community that was important for frog health."-Humans just like all other animals have a helpful biome.