In rats with different genetic modifications that affect blood pressure, the connection between gut bacteria and blood pressure isn't consistent - sometimes more of certain bacteria is linked to lower blood pressure, sometimes not.

In rats with different genetic modifications that affect blood pressure, the types and amounts of bacteria in the gut differ between these strains.

In rats with different genetic modifications that affect blood pressure, the types and amounts of bacteria in the mouth differ between these strains.

In rats with different genetic modifications that affect blood pressure, the types and amounts of bacteria on the skin differ between these strains.

In rats prone to high blood pressure, the types and amounts of bacteria in the mouth are affected by the rat's genetic makeup.

In rats, higher levels of certain mouth bacteria were linked to lower blood pressure, showing how the mouth's bacteria might help control blood pressure.