These days everyone's banging on about friendly bacteria! For at least six thousand years, Saccharomyces cerevisiae has been used to make beer and bread. It's Latin name means 'sugar fungus of the beer'. One yeast can turn into one million in only six hours; and a single droplet can contain five million!

These 4-inch plush dolls look like the real microbes that can give you grief?about a million times actual size!