Identical Twins Not So Identical In Gut Bacteria

“Identical twins may share appearances, mannerisms, even clothes — but the microbes living in their guts are anything but the same. By comprehensively sequencing microbial genes in the gut, researchers have found that communities of bacteria in adult identical twins differ dramatically…”

http://www.sciencenews.org/view/generic/id/57759/title/Identical_twins_may_not_be_so_identical_when_it_comes__to_gut_bacteria