.." In November 2012, the team published their first findings in a paper
called “A Jungle in There: Bacteria in Belly Buttons are Highly
Diverse, But Predictable.” They will soon have 600 samples from people
all over North America.
.... “With this variety, we may well begin to explain
the differences among people in terms of the intimate forests of their
umbilicus,” Dunn wrote. "..