● Fukatsu T,Hosokawa T,Koga R,Nikoh N,Kato T,Hayama S,Takefushi H,Tanaka I (2009). Intestinal endocellular symbiotic bacterium of the macaque louse Pedicinus obtusus: Distinct endosymbiont origins in anthropoid primate lice and the old world monkey louse. Appl. Environ. Microbiol.75, 3796-9.