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

In rats prone to high blood pressure, the types and amounts of bacteria on the skin are affected by the rat's genetic makeup, but this effect is different for male and female rats.

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 that are prone to high blood pressure, having more of a certain type of bacteria (Actinobacteria) in the mouth is linked to lower blood pressure.