undiscovered, they -- they have about twice the diversity westernized u.s. population has. >> pristine micro biomes largely untouched by modern day medicine or members outside the community. researchers wondered what have we lost and how? >> these are extremely healthy people. and we want to understand what they have, how they function with their my kroebs. there is a lot of variation. >> microbial anthropologist who piloted this research tested fecal, oral and skin samples from 34 members of this community. her team found that the hundred gathers harbored anti-buy yacht ic genes. >> so want to understand what is it that is modulated by die kbret or may have disappeared