In fact, every individual is more like an archipelago – a chain of islands. Each of our body parts has its own microbial fauna, just as the various Galapagos islands have their own special tortoises and finches. The human skin microbiome is the domain of Propionibacterium, Corynebacterium, and Staphylococcus, while Bacteroides lords over the gut, Lactobacillus dominates the vagina, and Streptococcus rules the mouth. Every organ is also variable in itself.
